oj.uz

Submission #120723

# Submission time Handle Problem Language Result Execution time Memory
120723 2019-06-25T10:25:03 Z _demon_ Duathlon (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];
int done[100009];
void dfs1(int node,int p){
    child[node]=1;
  	done[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){
  	done[node]=1;
    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);
    }
  	for(int i=0;i<n;i++){
      if(done[i]==0){
        	dfs1(i,i);
      }
    }
  	memset(done,0,sizeof(done));
//  for(int i=0;i<n;i++)cout<<w[i]<<" ";
//  cout<<endl;
    for(int i=0;i<n;i++){
      	if(done[i]==0){
          dfs2(i,i);
        }
    }
//  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:14:18: 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:25:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<v[node].size();i++){
                 ~^~~~~~~~~~~~~~~
count_triplets.cpp:36:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<v[node].size();i++){
                 ~^~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 834 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

# Verdict Execution time Memory Grader output
1 Runtime error 834 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

# Verdict Execution time Memory Grader output
1 Execution timed out 1098 ms 250576 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3072 KB Output is correct
2 Correct 5 ms 3200 KB Output is correct
3 Correct 4 ms 3072 KB Output is correct
4 Correct 5 ms 3200 KB Output is correct
5 Correct 5 ms 3200 KB Output is correct
6 Correct 4 ms 3200 KB Output is correct
7 Correct 4 ms 3200 KB Output is correct
8 Correct 5 ms 3200 KB Output is correct
9 Correct 5 ms 3200 KB Output is correct
10 Incorrect 5 ms 3072 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 119 ms 8696 KB Output is correct
2 Correct 129 ms 8824 KB Output is correct
3 Correct 140 ms 8824 KB Output is correct
4 Correct 156 ms 8916 KB Output is correct
5 Correct 141 ms 8824 KB Output is correct
6 Correct 155 ms 11616 KB Output is correct
7 Correct 145 ms 11000 KB Output is correct
8 Correct 166 ms 10360 KB Output is correct
9 Correct 141 ms 9780 KB Output is correct
10 Incorrect 132 ms 8812 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3072 KB Output is correct
2 Correct 5 ms 3200 KB Output is correct
3 Runtime error 962 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

# Verdict Execution time Memory Grader output
1 Correct 139 ms 8824 KB Output is correct
2 Correct 130 ms 8680 KB Output is correct
3 Execution timed out 1131 ms 999200 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# Verdict Execution time Memory Grader output
1 Runtime error 834 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

# Verdict Execution time Memory Grader output
1 Runtime error 834 ms 1048576 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -