Submission #402282

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
402282	2021-05-11 14:13:12	A_D	Duathlon (APIO18_duathlon)	C++14	31 / 100	997 ms	1048580 KiB

count_triplets

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#include <bits/stdc++.h>
#define int long long
using namespace std;
const int N=1e5+100;
vector<int> g[N];
bool vis[N];
bool c[N];
int dep[N];
int sum[N];
int a[N];
int n,ans,nn;
void dfs2(int u,int p)
{
    vis[u]=1;
    for(auto x:g[u])if(c[x])c[u]=1;
    for(auto x:g[u]){
        if(x==p)continue;
        if(vis[x]){
            c[u]=1;
            continue;
        }
        dep[x]=dep[u]+1;
        dfs2(x,u);
        sum[u]+=sum[x];
        a[u]+=a[x];
    }
    sum[u]+=dep[u];
 
 
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Compilation message (stderr)

count_triplets.cpp: In function 'void solve()':
count_triplets.cpp:53:11: warning: unused variable 'ann' [-Wunused-variable]
   53 |     int m,ann=0;
      |           ^~~
count_triplets.cpp: At global scope:
count_triplets.cpp:84:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   84 | main()
      | ^~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 11
• Subtask 3: 8 / 8
• Subtask 4: 10 / 10
• Subtask 5: 13 / 13
• Subtask 6: 0 / 15
• Subtask 7: 0 / 20
• Subtask 8: 0 / 8
• Subtask 9: 0 / 10