Submission #132973

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
132973	2019-07-20 03:16:31	ae04071	Duathlon (APIO18_duathlon)	C++11	31 / 100	162 ms	28932 KiB

count_triplets

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#include <bits/stdc++.h>
using namespace std;
int n,m,cut[100001],dfn[100001],low[100001],o,dn;
int bsz[200001];
vector<int> adj[100001],badj[200001];
stack<int> stk;
int ts;
void addEdge(int u,int v) {
    badj[u].push_back(v);
    badj[v].push_back(u);
}
void dfs(int cur,int p) {
    ts++;
    dfn[cur] = low[cur] = ++dn;
    stk.push(cur);
    for(auto &it:adj[cur]) if(it!=p) {
        if(dfn[it]) low[cur] = min(low[cur],low[it]);
        else {
            dfs(it,cur);
            low[cur] = min(low[cur],low[it]);
            if(low[it]>=dfn[cur]) {
                ++n;
                cut[cur] = 1;
                while(!stk.empty()) {
                    int v=stk.top();
                    bsz[n]++;
                    if(cut[v]) addEdge(n, v);
                    if(v==cur) break;
 
 
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Compilation message (stderr)

count_triplets.cpp: In function 'int main()':
count_triplets.cpp:53:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&m);
     ~~~~~^~~~~~~~~~~~~~
count_triplets.cpp:55:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d",&u,&v);
         ~~~~~^~~~~~~~~~~~~~

• 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