oj.uz

답안 #734762

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
734762 2023-05-03T04:42:23 Z keisuke6 철인 이종 경기 (APIO18_duathlon) C++14
0 / 100
 1000 ms 7400 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
bool sub3(vector<vector<int>> &G){
  for(int i=0;i<G.size();i++)if(G[i].size() > 2) return false;
  return true;
}
struct Unionfind{
  vector<int> par, siz;
  //初期化
  Unionfind(int n) : par(n,-1) , siz(n,1) {}
  int root(int x) {
    if(par[x] == -1) return x;
    else return par[x] = root(par[x]);
  }
  bool issame(int x,int y) {
    return root(x) == root(y);
  }
  bool unite(int x, int y){
    x = root(x); y = root(y);
    if(x ==  y) return false;
    if(siz[x] < siz[y]) swap(x,y);
    par[y] =  x;
    siz[x] += siz[y];
    return  true;
  }
  int size(int x) {
    return siz[root(x)];
  }
};
signed main(){
  int N,M;
  cin>>N>>M;
  vector<vector<int>> G(N);
  for(int i=0;i<M;i++){
    int a,b;
    cin>>a>>b;
    a--;
    b--;
    G[a].push_back(b);
    G[b].push_back(a);
  }
  int ans = 0;
  for(int i=0;i<N;i++){
    vector<int> dist(N,1e18);
    dist[i] = 0;
    queue<int> q;
    q.push(i);
    while(!q.empty()){
      int pos = q.front();
      q.pop();
      for(int x:G[pos]){
        if(dist[x] != 1e18) continue;
        dist[x] = dist[pos] + 1;
        q.push(x);
      }
    }
    for(int j=0;j<N;j++)if(dist[j] >= 2) ans += dist[j]-1;
  }
  cout<<ans<<endl;
}

Compilation message

count_triplets.cpp: In function 'bool sub3(std::vector<std::vector<long long int> >&)':
count_triplets.cpp:5:16: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::vector<long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 |   for(int i=0;i<G.size();i++)if(G[i].size() > 2) return false;
      |               ~^~~~~~~~~

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1069 ms 6672 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 340 KB Output is correct
2 Correct 18 ms 308 KB Output is correct
3 Correct 19 ms 376 KB Output is correct
4 Correct 25 ms 360 KB Output is correct
5 Correct 22 ms 372 KB Output is correct
6 Correct 23 ms 340 KB Output is correct
7 Correct 23 ms 340 KB Output is correct
8 Correct 22 ms 340 KB Output is correct
9 Correct 23 ms 368 KB Output is correct
10 Incorrect 15 ms 340 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1070 ms 7400 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 384 KB Output is correct
2 Correct 21 ms 376 KB Output is correct
3 Incorrect 22 ms 340 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1086 ms 7400 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -