void test() {
vii* adj = new vii[5];
adj[0].push_back(ii(1, 1));
adj[0].push_back(ii(2, 10));
adj[1].push_back(ii(3, 2));
adj[2].push_back(ii(3, -10));
adj[3].push_back(ii(4, 3));
bool neg_cycle;
int* dist = bellman_ford(5, 0, adj, neg_cycle);
assert_false(neg_cycle);
assert_equal(0, dist[0]);
assert_equal(1, dist[1]);
assert_equal(10, dist[2]);
assert_equal(0, dist[3]);
assert_equal(3, dist[4]);
delete[] adj;
adj = new vii[5];
adj[0].push_back(ii(1, 1));
adj[0].push_back(ii(2, 0));
adj[1].push_back(ii(3, 2));
adj[2].push_back(ii(3, -10));
adj[3].push_back(ii(4, 3));
adj[3].push_back(ii(0, 0));
dist = bellman_ford(5, 0, adj, neg_cycle);
assert_true(neg_cycle);
delete[] adj;
adj = new vii[2];
adj[0].push_back(ii(1, -1));
adj[1].push_back(ii(0, -1));
dist = bellman_ford(2, 0, adj, neg_cycle);
assert_true(neg_cycle);
delete[] adj;
adj = new vii[2];
adj[0].push_back(ii(1, -1));
adj[1].push_back(ii(0, -1));
dist = bellman_ford(2, 1, adj, neg_cycle);
assert_true(neg_cycle);
}
int main()
{
ALGraph *graph = malloc(sizeof(ALGraph));
createALGraph(graph);
printGraph(graph);
if(bellman_ford(graph, 0)>0)
{
printshortestPath(graph, 0);
}
else
{
printf("there is a negative circle\n");
}
/*
test = -1;
if(test)
{
printf("true\n");
}
else
{
printf("false\n");
}
*/
return 0;
}
int main(int argc, char *argv[]) {
int i, j;
int w;
FILE *fin = fopen("dist.txt", "r");
fscanf(fin, "%d", &n);
e = 0;
for (i = 0; i < n; ++i)
for (j = 0; j < n; ++j) {
fscanf(fin, "%d", &w);
if (w != 0) {
edges[e].u = i;
edges[e].v = j;
edges[e].w = w;
++e;
}
}
fclose(fin);
/* printDist(); */
bellman_ford(0);
printDist();
return 0;
}
int main()
{
int i, res;
init();
res = bellman_ford();
printf("%s\n", ans[res]);
return 0;
}
int main()
{
int ans, i;
init();
bellman_ford();
ans = oo;
for(i = 2;i <= n; i++)
if(ans > d[i] + price[i]) ans = d[i] + price[i];
printf("%d\n", ans);
return 0;
}
int main(int argc, char* argv[])
{
while(init()) {
if (bellman_ford(0)) {
printf("successful conspiracy\n");
} else {
printf("lamentable kingdom\n");
}
}
return 0;
}
void original_bellman_ford(std::shared_ptr<graph_generator> graph) {
zbp::distance_matrix G = graph->original_graph();
std::vector<double> d;
bellman_ford(G, 0, graph->size(), d);
#ifdef _DEBUG
if (d.empty())
std::cout << "Wykryto ujemny cykl" << std::endl;
else {
for (int i = 0; i < d.size(); ++i)
std::cout << 0 << " --> " << i << " : " << d[i] << std::endl;
}
#endif
}
int main() {
scanf("%d %d", &V, &E);
for(int i = 0; i < E; i++) {
int from, to, cost;
scanf("%d %d %d", &from, &to, &cost);
// undirected graph
EDGES[2 * i] = Edge(from, to, cost);
EDGES[2 * i + 1] = Edge(to, from, cost);
}
bellman_ford(0);
for(int i = 0; i < V; i++) {
printf("vertex:%d, distance:%d\n", i, DISTANCE[i]);
}
}
int main()
{
FILE * f = fopen("matrix.txt","r");
readFromAdjMatrix(f);
printAdjMatrix();
bfs(0);
dfs(0);
dfsRecurs(0);
prim(0);
kruskal();
dijkstra(0);
bellman_ford(0);
return 0;
}
int main()
{
int ans, i;
init();
memset(flag, 0, sizeof(flag));
flag[1] = 1;
dfs(1, level[1]);
bellman_ford();
ans = oo;
for(i = 2;i <= n; i++)
if(ans > d[i] + price[i]) ans = d[i] + price[i];
if(ans == oo) ans = price[1];
printf("%d\n", ans);
return 0;
}
int main(){
list<vertex*> V;
vector<edge> E;
populate_adj_list_w_edges(V, E);
vertex* s = V.front();
bellman_ford(V, s);
printf("Distance from %d:\n", s->index);
print_adj_list(V);
}
int main()
{
int i;
scanf("%d",&n);
for (i=0;i<n;i++)
{
scanf("%d%d%d",&f[i].st,&f[i].ed,&f[i].val);
f[i].ed++;
if (f[i].st<min)
min=f[i].st;
if (f[i].ed>max)
max=f[i].ed;
}
printf("%d\n",bellman_ford(min));
return 0;
}
int main(){
int tc, n, m, t, i, j, a, b;
scanf("%d", &tc);
while(tc--){
scanf("%d %d", &n, &m);
memset(g, 0, sizeof(g));
memset(bitmask, 0, sizeof(bitmask));
for(i=0;i<m;i++){
scanf("%d %d %d", &a, &b, &t);
g[a][b] = t;
bitmask[a][b]=1;
}
if (bellman_ford(n, m)) printf("possible\n");
else printf("not possible\n");
}
}
int main()
{
int i, j, a, b, c, n, m;
while (scanf("%d%d", &n, &m) && n != 0)
{
j = 0;
for (i = 0; i < m; ++i)
{
scanf("%d%d%d", &a, &b, &c);
edge[j++] = Edge(a, b, c);
edge[j++] = Edge(b, a, c);
}
if (bellman_ford(n, j, 1) == 1)
printf("%d\n", dist[n]);
}
return 0;
}
void deserialize_pkt(void * packet){
uint16_t sender_id;
sender_id=process_pkt(packet);
if(servers[sender_id-1].is_alive==1 && servers[sender_id-1].is_neighbor==1){ // accept packet only if its from an active and neighnor server
printf("RECEIVED A MESSAGE FROM SERVER %d\n",sender_id);
bellman_ford();
num_of_pkts_received++;
reset_skip_flag(sender_id);
}
else{ //discard packet
printf("PACKET FROM SERVER %d DISCARDED\n",sender_id);
}
}
int mincost_maxflow()
{
int max = 0, i, j, t;
while(bellman_ford())
{
i = n;
while(pre[i] != -1)
{
t = pre[i];
e[t].f--;
e[e[t].op].f++;
e[e[t].op].c = -e[t].c;
i = e[t].u;
}
max += -d[n];
}
return max;
}
int min_cost_flow()
{
int min = 0, i, j, t;
while(bellman_ford())
{
min += d[n];
i = n;
while(pre[i] != -1)
{
t = pre[i];
e[t].f--;
e[e[t].op].f++;
e[e[t].op].c = -e[t].c;
i = e[t].u;
}
}
return min;
}
int main()
{
int n, ml, md;
int i;
int a, b, c;
int m = 1;
scanf("%d %d %d", &n, &ml, &md);
for (i = 0; i < ml; i++) {
scanf("%d %d %d", &a, &b, &c);
cons[m].a = a;
cons[m].b = b;
cons[m].c = c;
m++;
}
for (i = 0; i < md; i++) {
scanf("%d %d %d", &a, &b, &c);
cons[m].a = b;
cons[m].b = a;
cons[m].c = -c;
m++;
}
if (bellman_ford(cons, n, m - 1) == 0) {
if (d[n] == INF) {
printf("-2\n");
}
else {
printf("%d\n", d[n]);
}
}
else {
printf("-1\n");
}
return 0;
}
int reweighttingEdge(struct Matrix_Graph *mat_graph, \
struct Point_Graph *poi_graph)
{
int i, j;
int newNode, noNegativeCircult;
struct Edge *edge;
newNode = 0;
poi_graph->node[newNode].start = NULL;
poi_graph->node[newNode].from = newNode;
mat_graph->adjcent_matrix[newNode][newNode] = 0;
for (i = 1; i <= poi_graph->node_num; i++) {
edge = alloc(struct Edge, 1);
edge->to = i;
edge->weight = 0;
edge->next = poi_graph->node[newNode].start;
poi_graph->node[newNode].start = edge;
mat_graph->adjcent_matrix[newNode][i] = INT_MAX;
}
for (j = 0; j <= mat_graph->node_num; j++)
mat_graph->shortest_matrix[0][j] = mat_graph->adjcent_matrix[0][j];
if (!(noNegativeCircult = bellman_ford(mat_graph, poi_graph, newNode)))
return noNegativeCircult;
for (i = 1; i <= poi_graph->node_num; i++) {
edge = poi_graph->node[i].start;
while (edge) {
edge->newWeight = edge->weight + \
mat_graph->shortest_matrix[newNode][i] \
- mat_graph->shortest_matrix[newNode][edge->to];
edge = edge->next;
}
}
return noNegativeCircult;
}
int main(int argc, char const *argv[])
{
int n ;
printf("enter number of vertices\n");
scanf("%d",&n);
int a[n+1][n+1], w[n+1][n+1], d[n+1];
int path[n+1];
int i,j;
create_matrix(n, a, w);
printf("Adj matrix :\n");
for ( i = 1; i <= n; ++i)
{
for (j = 1; j <= n; ++j)
{
printf("%d ", a[i][j]);
}
printf("\n");
}
printf("Weight matrix :\n");
for ( i = 1; i <= n; ++i)
{
for (j = 1; j <= n; ++j)
{
printf("%d ", w[i][j]);
}
printf("\n");
}
printf("Enter source\n");
int source;
scanf("%d",&source);
bellman_ford(n, a, w, d, path, source);
printf("Distances :\n");
print_result(n, d, path);
return 0;
}
int main(){
while (scanf("%d%d", &nrow, &ncol) && nrow){
int nstone, nhole, x, y;
memset(holes, -1, sizeof(holes));
memset(stones, 0, sizeof(stones));
scanf("%d", &nstone);
for (int i = 0; i < nstone; i++){
scanf("%d%d", &x, &y);
stones[x][y] = true;
}
scanf("%d", &nhole);
for (int i = 0; i < nhole; i++){
scanf("%d%d", &x, &y);
holes[x][y].read();
}
int ans = bellman_ford(0, nrow * ncol - 1);
if (ans == -INF) printf("Never\n");
else if (ans == INF) printf("Impossible\n");
else printf("%d\n", ans);
}
return 0;
}
void bellman()
{
int i, j;
int nArestas;
int nVertices;
int **matAdj;
int *distancia; /* d[i] é a distância mínima do nó escolhido ao nó i */
// Alocacao para a matAdj[tamMax][tamMax]
matAdj = (int**)calloc(tamMax, sizeof(int*));
for (i = 0; i < tamMax; i++)
{
for (j = 0; j < tamMax; j++)
{
matAdj[i] = (int*)calloc(tamMax, sizeof(int));
}
}
// Inicia a matriz com INF
for (i = 0; i < tamMax; i++)
{
for (j = 0; j < tamMax; j++)
{
if (i != j)
matAdj[i][j] = INF;
else
matAdj[i][j] = 0;
}
}
// Fim da alocao para a matriz
FILE *fp = fopen("grafo.txt", "r");
if (fp == NULL) {
printf("ERRO AO ABRIR GRAFO!\n");
exit(2);
}
//Carrega a matriz adjacente
criaMatAdjacenteComPeso(matAdj, &nVertices, &nArestas, fp);
//Alocacao da matriz que guarda as distancias
distancia = (int*)malloc(sizeof(int) * nVertices);
//alocacao do vetor de arestas
arestas = (Aresta*)malloc(sizeof(Aresta)*2*nArestas);
nArestas = 0;
precedentes = (Lista*)malloc(sizeof(Lista)*nVertices);
/*IMPRESSAO DA MATRIZ
for(i=0;i<nVertices;i++){
for(j=0;j<nVertices;j++){
printf("%d ", matAdj[i][j]);
}
printf("\n");
}
*/
for (i = 0; i < nVertices; i++)
{
inicializa_lista(&precedentes[i], sizeof(int));
for (j = 0; j < nVertices; j++)
{
if (matAdj[i][j] != INF)
{
arestas[nArestas].origem = i;
arestas[nArestas].destino = j;
arestas[nArestas].peso = matAdj[i][j];
nArestas++;
}
}
}
fclose(fp);
/* print origem -> destino com peso
for(i=0;i<nArestas;i++){
printf("%d -%d-> %d\n", arestas[i].origem,arestas[i].peso,arestas[i].destino);
}
*/
/* printDist(); */
int chosenOne;
printf("Executar Bellman-Ford a partir do vertice: \n");
scanf("%d", &chosenOne);
bellman_ford(chosenOne, nVertices, distancia, nArestas);/*chama funcao bellman_ford com parametros*/
printDistancias(chosenOne,nVertices, distancia);//imprime as distancias e precedentes
}
int main()
{
graph_matrix g1;
g1.g_cnt = 4;
g1.g_m[0][1] = INF, g1.g_m[0][2] = 1, g1.g_m[0][3] = -5;
g1.g_m[1][0] = INF, g1.g_m[1][2] = INF, g1.g_m[1][3] = 4;
g1.g_m[2][0] = 1, g1.g_m[2][1] = INF, g1.g_m[2][3] = 2;
g1.g_m[3][0] = -5, g1.g_m[3][1] = 4, g1.g_m[3][2] = 2;
//这里的e1和g1描绘同一个图g1，8条边重复表示无向图，g1中存在负权值环
edge_list e1(8);
e1.e_l[0].e_beg = 0, e1.e_l[0].e_end = 2, e1.e_l[0].e_value = 1;
e1.e_l[1].e_beg = 2, e1.e_l[1].e_end = 0, e1.e_l[1].e_value = 1;
e1.e_l[2].e_beg = 2, e1.e_l[2].e_end = 3, e1.e_l[2].e_value = 2;
e1.e_l[3].e_beg = 3, e1.e_l[3].e_end = 2, e1.e_l[3].e_value = 2;
e1.e_l[4].e_beg = 0, e1.e_l[4].e_end = 3, e1.e_l[4].e_value = -5;
e1.e_l[5].e_beg = 3, e1.e_l[5].e_end = 0, e1.e_l[5].e_value = -5;
e1.e_l[6].e_beg = 1, e1.e_l[6].e_end = 3, e1.e_l[6].e_value = 4;
e1.e_l[7].e_beg = 3, e1.e_l[7].e_end = 1, e1.e_l[7].e_value = 4;
//g2中不存在负权环,g2和e2描绘同一个图g2
graph_matrix g2;
g2.g_cnt = 8;
for(int i = 0; i < 8; ++ i)
for(int j = 0; j < 8; ++ j)
g2.g_m[i][j] = (i == j)? 0 : INF;
g2.g_m[0][1] = 3; g2.g_m[0][2] = 9; g2.g_m[0][3] = 12;
g2.g_m[1][0] = 3; g2.g_m[1][2] = 5; g2.g_m[1][5] = 9; g2.g_m[1][7] = 30;
g2.g_m[2][0] = 9; g2.g_m[2][1] = 5; g2.g_m[2][7] = 26;
g2.g_m[3][0] = 12; g2.g_m[3][4] = 3; g2.g_m[3][5] = 7; g2.g_m[3][6] = 20;
g2.g_m[4][3] = 3; g2.g_m[4][5] = 11; g2.g_m[4][7] = 20;
g2.g_m[5][1] = 9; g2.g_m[5][3] = 7; g2.g_m[5][4] = 11; g2.g_m[5][6] = 16;
g2.g_m[6][3] = 20; g2.g_m[6][5] = 16; g2.g_m[6][7] = 9;
g2.g_m[7][2] = 26; g2.g_m[7][1] = 30; g2.g_m[7][4] = 20; g2.g_m[7][6] = 9;
edge_list e2(28);
e2.e_l[0].e_beg = 0, e2.e_l[0].e_end = 1, e2.e_l[0].e_value = 3;
e2.e_l[1].e_beg = 1, e2.e_l[1].e_end = 0, e2.e_l[1].e_value = 3;
e2.e_l[2].e_beg = 0, e2.e_l[2].e_end = 2, e2.e_l[2].e_value = 9;
e2.e_l[3].e_beg = 2, e2.e_l[3].e_end = 0, e2.e_l[3].e_value = 9;
e2.e_l[4].e_beg = 1, e2.e_l[4].e_end = 2, e2.e_l[4].e_value = 5;
e2.e_l[5].e_beg = 2, e2.e_l[5].e_end = 1, e2.e_l[5].e_value = 5;
e2.e_l[6].e_beg = 0, e2.e_l[6].e_end = 3, e2.e_l[6].e_value = 12;
e2.e_l[7].e_beg = 3, e2.e_l[7].e_end = 0, e2.e_l[7].e_value = 12;
e2.e_l[8].e_beg = 1, e2.e_l[8].e_end = 5, e2.e_l[8].e_value = 9;
e2.e_l[9].e_beg = 5, e2.e_l[9].e_end = 1, e2.e_l[9].e_value = 9;
e2.e_l[10].e_beg = 1, e2.e_l[10].e_end = 7, e2.e_l[10].e_value = 30;
e2.e_l[11].e_beg = 7, e2.e_l[11].e_end = 1, e2.e_l[11].e_value = 30;
e2.e_l[12].e_beg = 3, e2.e_l[12].e_end = 4, e2.e_l[12].e_value = 3;
e2.e_l[13].e_beg = 4, e2.e_l[13].e_end = 3, e2.e_l[13].e_value = 3;
e2.e_l[14].e_beg = 3, e2.e_l[14].e_end = 5, e2.e_l[14].e_value = 7;
e2.e_l[15].e_beg = 5, e2.e_l[15].e_end = 3, e2.e_l[15].e_value = 7;
e2.e_l[16].e_beg = 3, e2.e_l[16].e_end = 6, e2.e_l[16].e_value = 20;
e2.e_l[17].e_beg = 6, e2.e_l[17].e_end = 3, e2.e_l[17].e_value = 20;
e2.e_l[18].e_beg = 2, e2.e_l[18].e_end = 7, e2.e_l[18].e_value = 26;
e2.e_l[19].e_beg = 7, e2.e_l[19].e_end = 2, e2.e_l[19].e_value = 26;
e2.e_l[20].e_beg = 4, e2.e_l[20].e_end = 5, e2.e_l[20].e_value = 11;
e2.e_l[21].e_beg = 5, e2.e_l[21].e_end = 4, e2.e_l[21].e_value = 11;
e2.e_l[22].e_beg = 5, e2.e_l[22].e_end = 6, e2.e_l[22].e_value = 16;
e2.e_l[23].e_beg = 6, e2.e_l[23].e_end = 5, e2.e_l[23].e_value = 16;
e2.e_l[24].e_beg = 6, e2.e_l[24].e_end = 7, e2.e_l[24].e_value = 9;
e2.e_l[25].e_beg = 7, e2.e_l[25].e_end = 6, e2.e_l[25].e_value = 9;
e2.e_l[26].e_beg = 4, e2.e_l[26].e_end = 7, e2.e_l[26].e_value = 20;
e2.e_l[27].e_beg = 7, e2.e_l[27].e_end = 4, e2.e_l[27].e_value = 20;
int dist[MAX], path[MAX];
cout << "bellman ford on g1:" << endl;
if(bellman_ford(g1, e1, 0, dist, path)) //1
print_dp(dist, path, g1.g_cnt);
else
cout << "g1 doesn't exist shortest path" << endl;
cout << "bellman ford on g2:" << endl;
if(bellman_ford(g2, e2, 0, dist, path)) //1
print_dp(dist, path, g2.g_cnt);
else
cout << "g2 doestn't exist shortest path" << endl;
cout << "spfa on g1:" << endl;
if(spfa(g1, 0, dist, path)) //2
print_dp(dist, path, g1.g_cnt);
else
cout << "g1 doestn't exist shortest path" << endl;
cout << "spfa on g2:" << endl;
if(spfa(g2, 0, dist, path)) //2
print_dp(dist, path, g2.g_cnt);
else
cout << "g2 doesn't exist shortest path" << endl;
cout << "dijkstra on g2:";
dijkstra(g2, 0, dist, path); //3
print_dp(dist, path, g2.g_cnt);
cout << "floyd warshall on g2:" << endl;
floyd(g2); //4
for(int i = 0; i < g2.g_cnt; ++ i){
for(int j = 0; j < g2.g_cnt; ++ j)
cout << g2.g_m[i][j] << ' ';
cout << endl;
}
cout << endl << "difference constraints: ";
int **ss = new int*[8];
for(int i = 0; i < 8; ++ i)
ss[i] = new int[5];
ss[0][0] = 1, ss[0][1] = -1, ss[0][2] = 0, ss[0][3] = 0, ss[0][4] = 0;
ss[1][0] = 1, ss[1][1] = 0, ss[1][2] = 0, ss[1][3] = 0, ss[1][4] = -1;
ss[2][0] = 0, ss[2][1] = 1, ss[2][2] = 0, ss[2][3] = 0, ss[2][4] = -1;
ss[3][0] = -1, ss[3][1] = 0, ss[3][2] = 1, ss[3][3] = 0, ss[3][4] = 0;
ss[4][0] = -1, ss[4][1] = 0, ss[4][2] = 0, ss[4][3] = 1, ss[4][4] = 0;
ss[5][0] = 0, ss[5][1] = 0, ss[5][2] = -1, ss[5][3] = 1, ss[5][4] = 0;
ss[6][0] = 0, ss[6][1] = 0, ss[6][2] = -1, ss[6][3] = 0, ss[6][4] = 1;
ss[7][0] = 0, ss[7][1] = 0, ss[7][2] = 0, ss[7][3] = -1, ss[7][4] = 1;
int b[8] = {0, -1, 1, 5, 4, -1, -3, -3};
int *dis = new int[MAX];
if(difference_constraints(ss, 8, 5, b, dis)){ //5
for(int i = 1; i <= 5; ++ i)
cout << dis[i] << ' ';
cout << endl;
}
else
cout << "no ans" << endl;
return(0);
}
int main()
{
while(init()) bellman_ford();
return 0;
}
int main(void) {
int first[11], node[26], next[26], pi[11];
int w[26], d[11];
int s;
int i;
int ok;
/* The graph contains the following directed edges with weights:
(1, 2), weight 6
(1, 4), weight 7
(2, 3), weight 5
(2, 4), weight 8
(2, 5), weight -4
(3, 2), weight -2
(4, 3), weight -3
(4, 5), weight 9
(5, 1), weight 2
(5, 3), weight 7
*/
first[1] = 1;
first[2] = 3;
first[3] = 6;
first[4] = 7;
first[5] = 9;
first[6] = 12;
first[7] = 14;
first[8] = 18;
first[9] = 20;
first[10] = 24;
node[1] = 2;
node[2] = 4;
node[3] = 3;
node[4] = 4;
node[5] = 5;
node[6] = 2;
node[7] = 3;
node[8] = 5;
node[9] = 1;
node[10] = 3;
node[11] = 6;
node[12] = 7;
node[13] = 8;
node[14] = 9;
node[15] = 10;
node[16] = 1;
node[17] = 2;
node[18] = 9;
node[19] = 4;
node[20] = 10;
node[21] = 2;
node[22] = 10;
node[23] = 5;
node[24] = 4;
node[25] = 3;
w[1] = 6;
w[2] = 7;
w[3] = 5;
w[4] = 8;
w[5] = -4;
w[6] = -2;
w[7] = -3;
w[8] = 9;
w[9] = 2;
w[10] = 7;
w[11] = 4;
w[12] = 2;
w[13] = 9;
w[14] = 1;
w[15] = 5;
w[16] = 3;
w[17] = 4;
w[18] = 9;
w[19] = 6;
w[20] = 12;
w[21] = 1;
w[22] = 9;
w[23] = 2;
w[24] = 1;
w[25] = 4;
next[1] = 2;
next[2] = 0;
next[3] = 4;
next[4] = 5;
next[5] = 0;
next[6] = 0;
next[7] = 8;
next[8] = 0;
next[9] = 10;
next[10] = 11;
next[11] = 0;
next[12] = 13;
next[13] = 0;
next[14] = 15;
next[15] = 16;
next[16] = 17;
next[17] = 0;
next[18] = 19;
next[19] = 0;
next[20] = 21;
next[21] = 22;
next[22] = 23;
next[23] = 0;
next[24] = 25;
next[25] = 0;
//printf("Enter source node: ");
//scanf("%d", &s);
s = 1;
ok = bellman_ford(first, node, next, w, d, pi, s, 10);
//printf("bellman_ford returns ");
//printf("%d\n\n", ok);
int ret=0;
for (i = 1; i <= 5; ++i) {
//printf("%d: %f %d\n", i, d[i], pi[i]);
ret+=d[i]+pi[i];
}
return ret;
}
void main(void) {
int first[6], node[11], next[11], pi[6];
double w[11], d[6];
int s;
int i;
int ok;
/* The graph contains the following directed edges with weights:
(1, 2), weight 6
(1, 4), weight 7
(2, 3), weight 5
(2, 4), weight 8
(2, 5), weight -4
(3, 2), weight -2
(4, 3), weight -3
(4, 5), weight 9
(5, 1), weight 2
(5, 3), weight 7
*/
first[1] = 1;
first[2] = 3;
first[3] = 6;
first[4] = 7;
first[5] = 9;
node[1] = 2;
node[2] = 4;
node[3] = 3;
node[4] = 4;
node[5] = 5;
node[6] = 2;
node[7] = 3;
node[8] = 5;
node[9] = 1;
node[10] = 3;
w[1] = 6.0;
w[2] = 7.0;
w[3] = 5.0;
w[4] = 8.0;
/*
w[5] = -4.0;
w[6] = -2.0;
w[7] = -3.0;
*/
w[5] = 4.0;
w[6] = 2.0;
w[7] = 3.0;
w[8] = 9.0;
w[9] = 2.0;
w[10] = 7.0;
next[1] = 2;
next[2] = 0;
next[3] = 4;
next[4] = 5;
next[5] = 0;
next[6] = 0;
next[7] = 8;
next[8] = 0;
next[9] = 10;
next[10] = 0;
print "Enter source node: ";
read s;
ok = bellman_ford(first, node, next, w, d, pi, s, 5);
print "bellman_ford returns ";
print ok;
print "\n\n";
for (i = 1; i <= 5; ++i) {
print i;
print ": ";
print d[i];
print " ";
print pi[i];
print "\n";
}
}
int main(void) {
int first[6], node[11], next[11], pi[6];
double w[11], d[6];
int s;
int i;
int ok;
/* The graph contains the following directed edges with weights:
(1, 2), weight 6
(1, 4), weight 7
(2, 3), weight 5
(2, 4), weight 8
(2, 5), weight -4
(3, 2), weight -2
(4, 3), weight -3
(4, 5), weight 9
(5, 1), weight 2
(5, 3), weight 7
*/
first[1] = 1;// on met tous les sommet //
first[2] = 3;
first[3] = 6;
first[4] = 7;
first[5] = 9;
next[1] = 2; // on met a zero le dernier arc de chaque sommet
next[2] = 0;
next[3] = 4;
next[4] = 5;
next[5] = 0;
next[6] = 0;
next[7] = 8;
next[8] = 0;
next[9] = 10;
next[10] = 0;
node[1] = 2;// on met les arc dans l'ordre //
node[2] = 4;
node[3] = 3;
node[4] = 4;
node[5] = 5;
node[6] = 2;
node[7] = 3;
node[8] = 5;
node[9] = 1;
node[10] = 3;
w[1] = 6.0;// on met tous les poids dans l'ordre
w[2] = 7.0;
w[3] = 5.0;
w[4] = 8.0;
w[5] = -4.0;
w[6] = -2.0;
w[7] = -3.0;
w[8] = 9.0;
w[9] = 2.0;
w[10] = 7.0;
printf("Enter source node: ");
scanf("%d", &s);
ok = bellman_ford(first, node, next, w, d, pi, s, 5);
printf("bellman_ford returns ");
printf("%d\n\n", ok);
for (i = 1; i <= 5; ++i) {
printf("%d: %f %d\n", i, d[i], pi[i]);
}
return 0;
}