int main()
{
char s[100];
int n,count = 0,lenght,max;
int x,y;
scanf("%d\n",&n);
for( int i = 1; i <= n; i++) {
for(int j = 1; j < i;j++) {
scanf("%d",&lenght);
edge[count].x = i;
edge[count].y = j;
edge[count].lenght = lenght;
count++;
}
gets(s);
}
qsort(edge,count,sizeof(Edge),compare);
count = n - 1;
scanf("%d",&n);
for( int i = 0; i < n; i++) {
scanf("%d%d",&x,&y);
MergeSet(x,y);
count--;
}
for( int i = 0; count; i++)
if(FindParent(edge[i].x) != FindParent(edge[i].y)) {
MergeSet(edge[i].x,edge[i].y);
count--;
max = edge[i].lenght;
}
printf("%d\n",max);
}
int MergeOppisiteSet(int a,int b)
{
bool flag = true;
int t1 = FindParent(a);
int t2 = FindParent(b);
if( t1 == t2 || aparent[t1] == aparent[t2])
return 0;
if( aparent[t1] != t2)
MergeSet(aparent[t1],t2);
if( aparent[t2] != t1)
MergeSet(aparent[t2],t1);
return 1;
}
int main()
{
int m,n;
int count = 0;
scanf("%d",&n);
for( int i = 0; i < n; i++) {
scanf("%d",&m);
for( int j = 0; j < m; j++)
parent[j] = j;
for( int j = 0; j < m; j++)
for( int k = 0; k < m; k++) {
scanf("%d",&edge[count].weigh);
edge[count].x = j;
edge[count++].y = k;
}
qsort(edge,m * m,sizeof(Edge),compare);
count = 1;
int max;
for( int j = m; j < (m * m) && count < m; j++)
if(FindParent(edge[j].x) != FindParent(edge[j].y)) {
count ++;
MergeSet(edge[j].x,edge[j].y);
max = edge[j].weigh;
}
printf("%d\n",max);
}
}
int main()
{
int n,m,t;
int x,y;
char s[20];
scanf("%d",&t);
for( int i = 0; i < t; i++) {
memset(parent,0,100001 * sizeof(int));
memset(rela,0,100001 * sizeof(bool));
scanf("%d%d\n",&n,&m);
for( int j = 0; j < m; j++) {
gets(s);
if(s[0] == 'A') {
sscanf(s,"A %d%d",&x,&y);
if(FindParent(x) == FindParent(y))
if( cal(x) == cal(y))
printf("In the same gang.\n");
else
printf("In different gangs.\n");
else
printf("Not sure yet.\n");
}
else {
sscanf(s,"D %d%d",&x,&y);
if( FindParent(x) != FindParent(y))
MergeSet(x,y);
}
}
}
}
int main()
{
int n, count;
char x,y;
int v, weigh, sum;
scanf("%d",&n);
while( n) {
getchar();
count = sum = 0;
for( int i = 0; i < n - 1; i++) {
scanf("%c%d",&x,&v);
x -= 'A';
for( int j = 0; j < v; j++) {
scanf(" %c%d",&y,&weigh);
y -= 'A';
edge[count].x = x;
edge[count].y = y;
edge[count++].weigh = weigh;
}
getchar();
}
qsort(edge,count,sizeof(Edge),compare);
memset(parent,0,26 * sizeof(int));
for(int i = 0; i < count; i++)
if(FindParent(edge[i].x) != FindParent(edge[i].y)) {
sum += edge[i].weigh;
MergeSet(edge[i].x,edge[i].y);
}
printf("%d\n",sum);
scanf("%d",&n);
}
}
int main()
{
int parent[30001];
int m,n,time;
int t1,t2;
int count;
scanf("%d%d",&n,&m);
while(n) {
count = 0;
for( int i = 0; i < n; i++)
parent[i] = i;
for (int i = 0; i < m; i++) {
scanf("%d%d",&time,&t1);
for( int j = 1; j < time; j++) {
scanf("%d",&t2);
MergeSet(parent,t1,t2);
t1 = t2;
}
}
for( int i = 0; i < n; i++)
if(!FindParent(parent,i))
count++;
printf("%d\n",count);
scanf("%d%d",&n,&m);
}
return 0;
}
void Pr7Solve()
{
/* 0 - set contains a bridge
* 1 - set contains a fork
* SetState[0] contains the smallest stone id. The first
* stone that causes win structure.
*/
int SetState[3];
int StoneX[STONES_MAX];
int StoneY[STONES_MAX];
struct Pr7SetItem StonesSet[HEX_COORD_MAX][HEX_COORD_MAX];
/* This array represents all hexagon's cells */
int Hexagon[HEX_COORD_MAX][HEX_COORD_MAX];
/* Number of testcases */
int testCaseNumber;
int hexagonSize;
int stonesNumber;
int i, j, t, k;
int countRing;
/* Reading of number of testcases */
scanf("%d", &testCaseNumber);
/* Process all testcases */
for (i = 1; i <= testCaseNumber; i++)
{
/* Read of stones number and hexagon size */
scanf("%d%d", &hexagonSize, &stonesNumber);
/* Read all stones point destination inside the hexagon */
for (j = 0; j < stonesNumber; j++)
{
scanf ("%d%d", &StoneX[j], &StoneY[j]);
}
for (j = 0; j < 3; j++)
{
SetState[j] = INT_MAX;
}
/* Fill in all hexagon's cells by zero */
memset(Hexagon, 0, sizeof(Hexagon));
/* Read all stones sequentually and put them in the appropriate
* position inside the hexagon.
*/
for (j = 0; j < stonesNumber; j++)
{
int isBridgeOrFork;
/* Hexagon[x][y] = 1 means that there is stone in the cell
* Hexagon[x][y] = 0 the cell is empty and we can put a stone here
*/
Hexagon[StoneX[j]][StoneY[j]] = 1;
/* Create a set item for each stone */
CreateSetItem(
StoneX[j],
StoneY[j],
&StonesSet[StoneX[j]][StoneY[j]],
hexagonSize);
/* Check all neighbour, adjacent cells whether there is */
for (t = 0; t < HEX_NEIGHBOURS_NUM; t++)
{
/* If neighbour has a stone we need to merge the current item
* with its neighbour.
*/
if (Hexagon[StoneX[j] + DeltaX[t]][StoneY[j] + DeltaY[t]])
{
MergeSet(
StoneX[j],
StoneY[j],
StoneX[j] + DeltaX[t],
StoneY[j] + DeltaY[t],
StonesSet,
SetMask
);
}
}
Hexagon[StoneX[j]][StoneY[j]] = 1;
isBridgeOrFork = IsBridgeOrFork(StoneX[j], StoneY[j], StonesSet);
if ((isBridgeOrFork & 1) && j < SetState[0])
{
SetState[0] = j;
}
if ((isBridgeOrFork & 2) && j < SetState[1])
{
SetState[1] = j;
}
}
count2 = 1;
StonesSet[0][0].ParentIdX = 0;
StonesSet[0][0].ParentIdY = 0;
/* Go through all cells inside hexagon and find ones
* suspicious for being inside a circle.
* We take only those cells, which are inside the hexagon
* and there are not a stone in it.
*/
for (j = 0; j < 2 * hexagonSize - 1; j++)
{
for (t = 0; t < 2 * hexagonSize - 1; t++)
{
if (InHexagon(j, t, hexagonSize) && !Hexagon[j][t])
{
Hexagon[j][t] = 2;
StonesSet[j][t].ParentIdX = j;
StonesSet[j][t].ParentIdY = t;
count2++;
for (k = 0; k < 6; k++)
{
if (Hexagon[j + DeltaX[k]][t + DeltaY[k]] == 2)
{
MergeSet(
j,
t,
j + DeltaX[k],
t + DeltaY[k],
StonesSet,
IncrementCount2
);
}
}
if (AtEdge(j, t, hexagonSize))
{
MergeSet(
j,
t,
0,
0,
StonesSet,
IncrementCount2
);
}
}
}
}
/* Here we need some explanation about count2.
* In case when there is a ring after the set union
* we always have count2 set to 2. Lets count how many merge operations
* we need to unite the adjacents set of n cells in an arbitrary order
* For two adjacenr cells we need count2 = 1. For three we need 2
* For n we need n - 1 merge operations.
* So we have n increments of the count2 variable and n - 1 decrements of
* this count2. So after this we have count2 = 1 + 1.
* When we process a set which has at least on cell on the edge of the hexagon.
* we merge only one with the point (0, 0) and decrement the count2 variable as well
* This means that after this we have count2 = 0.
* If count2 > 1 that means there at least one ring inside the hexagon
*/
if (count2 > 1)
{
/* We have at least one winning ring.
* We set the last stone which makes the winning ring to the last stone
*/
SetState[2] = stonesNumber - 1;
}
/* We need to find the first stone which causes the winning ring
* We loop from the latest stone to the first and remove it from the
* hexagon. When we remove a stone there are 4 possible variants:
*
* 1. Extend existing space.
* If we discover a ring count2 +1
* If we discover a ring which on the edge +0
* If we extend an existed ring count2 +0
* If we extend an existed ring on an edge count2 +0
*
* 2. Unite two rings.
* Remove stone +1, unite cell with the first set -1,
* unite the cell with the second set -1. When we unite two
* rings into one ring we decrement count2.
*
* 3. Unite a ring with edge ring. Also decrement count2
*
*/
for (j = stonesNumber - 1; j > 0; j--)
{
Hexagon[StoneX[j]][StoneY[j]] = 2;
StonesSet[StoneX[j]][StoneY[j]].ParentIdX = StoneX[j];
StonesSet[StoneX[j]][StoneY[j]].ParentIdY = StoneY[j];
count2++;
for (k = 0; k < 6; k++)
{
if (Hexagon[StoneX[j] + DeltaX[k]][StoneY[j] + DeltaY[k]] == 2)
{
MergeSet(
StoneX[j],
StoneY[j],
StoneX[j] + DeltaX[k],
StoneY[j] + DeltaY[k],
StonesSet,
IncrementCount2
);
}
}
if (AtEdge(StoneX[j], StoneY[j], hexagonSize))
{
MergeSet(
StoneX[j],
StoneY[j],
0,
0,
StonesSet,
IncrementCount2
);
}
if (count2 > 1)
{
SetState[2] = j - 1;
}
}
}
}
