Submission #3169

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
3169	2013-08-27 08:59:51	myungwoo	간선 파괴 (GA5_destroy)	C++98	100 / 100	2176 ms	3260 KiB

destroy

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#include <stdio.h>
#define MAXN 707
#define MAXM 123460
int N,M,Q;
int mom[MAXN],prev[MAXM],next[MAXM];
bool fchk[MAXM],bchk[MAXM];
struct Edge{
  Edge(int a=0,int b=0): a(a), b(b) {}
  int a,b;
} edge[MAXM];
int _find(int n){ return mom[n]==n?n:(mom[n]=_find(mom[n])); }
int _union(int a,int b){ a = _find(a), b = _find(b); if (a != b){ mom[b] = a; return 1; } return 0; }
int main()
{
  int i,k,s,e;
  scanf("%d%d",&N,&M);
  for (i=1;i<=M;i++) scanf("%d%d",&s,&e), edge[i] = Edge(s,e);
  for (i=1;i<=N;i++) mom[i] = i;
  for (i=1,k=0;i<=M;i++){
    prev[i] = k;
    if (_union(edge[i].a,edge[i].b)){
      fchk[i] = 1;
      k = i;
    }
  }
 
 
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• Subtask 1: 25 / 25
• Subtask 2: 35 / 35
• Subtask 3: 40 / 40