int main() {
int n, m;
while(scanf("%d%d", &n, &m) == 2 && n) {
g.init(n+m+2);
for(int i = 1; i <= n; i++)
for(int j = 1; j <= m; j++) {
double d;
scanf("%lf", &d);
g.AddEdge(j, m+i, 1, d);
}
for(int i = 1; i <= m; i++) g.AddEdge(0, i, 1, 0);
for(int i = 1; i <= n; i++) g.AddEdge(m+i, m+n+1, 1, 0);
double cost;
int flow = g.MincostMaxflow(0, m+n+1, cost);
printf("%.2lf\n", cost / n + 1e-8);
}
return 0;
}
int main() {
int n, a, b, v, kase = 0;
while(scanf("%d%d%d", &n, &a, &b) == 3) {
g.init(n+2);
for(int u = 0; u < n; u++) {
scanf("%d%d", &x[u], &y[u]);
G[u].clear();
for(;;) {
scanf("%d", &v);
if(v == 0) break;
G[u].push_back(v-1);
}
}
memset(c1, 0, sizeof(c1));
memset(c2, 0, sizeof(c2));
double sum = 0;
for(int u = 0; u < n; u++) {
for(int i = 0; i < G[u].size(); i++) {
int v = G[u][i];
double d = sqrt((x[u] - x[v])*(x[u] - x[v]) + (y[u] - y[v])*(y[u] - y[v]));
double edge_cost = -d*a+b; // minimize sum{edge_cost}
if(edge_cost >= 0) {
g.AddEdge(u, v, 1, edge_cost);
} else {
g.AddEdge(v, u, 1, -edge_cost);
c1[v]++; c2[u]++;
sum += -edge_cost;
}
}
}
for(int u = 0; u < n; u++) {
if(c1[u] > c2[u]) g.AddEdge(n, u, c1[u]-c2[u], 0);
if(c2[u] > c1[u]) g.AddEdge(u, n+1, c2[u]-c1[u], 0);
}
double cost;
int flow = g.MincostMaxflow(n, n+1, cost);
double ans = sum - cost;
if(ans < 0) ans = 0; // avoid -0.0
printf("Case %d: %.2lf\n", ++kase, ans);
}
return 0;
}
int main() {
int n, m, a, b, c;
while(scanf("%d%d", &n, &m) == 2 && n) {
g.init(n*2-2);
// 点2~n-1拆成弧i->i'，前者编号为0~n-1，后者编号为n~2n-3
for(int i = 2; i <= n-1; i++)
g.AddEdge(i-1, i+n-2, 1, 0);
while(m--) {
scanf("%d%d%d", &a, &b, &c);
// 连a'->b
if(a != 1 && a != n) a += n-2; else a--;
b--;
g.AddEdge(a, b, 1, c);
}
int cost;
g.MincostFlow(0, n-1, 2, cost);
printf("%d\n", cost);
}
return 0;
}
int main()
{
#ifdef _Rayn
freopen("in.txt", "r", stdin);
#endif
int T, cases = 0;
char buf[15];
scanf("%d", &T);
while(T--)
{
scanf("%d%d%d", &n, &m, &k);
Solver.Init(2*n*m+2);
for(int i = 1; i <= n; ++i)
{
scanf("%s", buf + 1);
for(int j = 1; j <= m; ++j)
{
grid[i][j] = buf[j] - '0';
}
}
int S = 0, T = 2*n*m+2;
for(int i = 1; i <= n; ++i)
{
for(int j = 1; j <= m; ++j)
{
Solver.AddEdge(S, (i-1)*m+j, 1, 0);
}
}
Solver.AddEdge(S, 2*n*m+1, k, 0);
for(int i = 1; i <= n; ++i)
{
for(int j = 1; j <= m; ++j)
{
Solver.AddEdge((i-1)*m+j+n*m, T, 1, 0);
Solver.AddEdge(2*n*m+1, (i-1)*m+j+n*m, 1, 0);
}
}
for(int i = 1; i <= n; ++i)
{
for(int j = 1; j <= m; ++j)
{
for(int d = 0; d < 2; ++d)
{
int tx = i, ty = j;
while(tx + dir[d][0] <= n && ty + dir[d][1] <= m)
{
tx += dir[d][0];
ty += dir[d][1];
int f = abs(tx-i) + abs(ty-j) - 1 - (grid[i][j] == grid[tx][ty]? grid[i][j] : 0);
Solver.AddEdge((i-1)*m+j, (tx-1)*m+ty+n*m, 1, f);
}
}
}
}
Solver.MinCost(S, T, flow, cost);
printf("Case %d : ", ++cases);
if(flow == n*m)
printf("%d\n", -cost);
else
printf("-1\n");
}
return 0;
}
