oj.uz

답안 #120707

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
120707 2019-06-25T09:44:18 Z _demon_ 철인 이종 경기 (APIO18_duathlon) C++14
0 / 100
 1000 ms 1048576 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll n,m;
ll child[100009];
ll ans;
ll w[100009];
vector<ll>v[100009];
void dfs1(int node,int p){
    child[node]=1;
    if(node!=p)w[node]=w[p]+1;
    for(int i=0;i<v[node].size();i++){
        int u=v[node][i];
        if(u==p)continue;
        dfs1(u,node);
        child[node]+=child[u];
    }
}
int a[100009];
void dfs2(int node,int p){
    ll sum=0;
    for(int i=0;i<v[node].size();i++){
        int u=v[node][i];
        if(w[u]>w[node]){
            sum+=child[u]*(n-child[u]-1);
        }
        else{
            sum+=(n-child[node])*(child[node]-1);
        }
    }
    a[node]=sum;
    ans+=sum;
    for(int i=0;i<v[node].size();i++){
        int u=v[node][i];
        if(u==p)continue;
        dfs2(u,node);
    }
}
int main(){
    cin>>n>>m;
    for(int i=0;i<m;i++){
        int a,b;
        cin>>a>>b;
        a--;b--;
        v[a].push_back(b);
        v[b].push_back(a);
    }
    dfs1(0,0);
//  for(int i=0;i<n;i++)cout<<w[i]<<" ";
//  cout<<endl;
    dfs2(0,0);
//  for(int i=0;i<n;i++)cout<<a[i]<<" ";
//  cout<<endl;
    cout<<ans<<endl;
}

Compilation message

count_triplets.cpp: In function 'void dfs1(int, int)':
count_triplets.cpp:12:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<v[node].size();i++){
                 ~^~~~~~~~~~~~~~~
count_triplets.cpp: In function 'void dfs2(int, int)':
count_triplets.cpp:22:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<v[node].size();i++){
                 ~^~~~~~~~~~~~~~~
count_triplets.cpp:33:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<v[node].size();i++){
                 ~^~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 808 ms 1048576 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 808 ms 1048576 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1103 ms 238544 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 2816 KB Output is correct
2 Correct 0 ms 2688 KB Output is correct
3 Correct 6 ms 2816 KB Output is correct
4 Correct 5 ms 2816 KB Output is correct
5 Correct 5 ms 2816 KB Output is correct
6 Correct 6 ms 2816 KB Output is correct
7 Correct 5 ms 2816 KB Output is correct
8 Correct 4 ms 2688 KB Output is correct
9 Correct 5 ms 2816 KB Output is correct
10 Incorrect 4 ms 2688 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 109 ms 8312 KB Output is correct
2 Correct 123 ms 9680 KB Output is correct
3 Correct 124 ms 9592 KB Output is correct
4 Correct 113 ms 9764 KB Output is correct
5 Correct 134 ms 9564 KB Output is correct
6 Correct 183 ms 12556 KB Output is correct
7 Correct 149 ms 11768 KB Output is correct
8 Correct 149 ms 11356 KB Output is correct
9 Correct 131 ms 10652 KB Output is correct
10 Incorrect 118 ms 9592 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 2688 KB Output is correct
2 Correct 5 ms 2688 KB Output is correct
3 Runtime error 875 ms 1048576 KB Execution killed with signal 9 (could be triggered by violating memory limits)
4 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 140 ms 8416 KB Output is correct
2 Correct 232 ms 9564 KB Output is correct
3 Execution timed out 1146 ms 1032756 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 808 ms 1048576 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 808 ms 1048576 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -