Submission #1169378

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1169378	2025-03-18 15:13:21	sasde	Railway (BOI17_railway)	C++20	36 / 100	156 ms	69964 KiB

railway

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#include<bits/stdc++.h>
#define int long long
#define str string
#define task "a"
#define ii pair<int,int>
#define iii pair<int,ii>
#define iv pair<ii,ii>
#define se second
#define fi first
#define ffi fi.fi
#define sfi se.fi
#define sse se.se
#define fse fi.se
#define lt(i, c, d) for(int i = c; i <= d; ++i)
#define fl(i, c, d) for(int i = d; i >= c; --i)
#define pb push_back//khi dùng pair
#define emb emplace_back//k pair
using namespace std;
const int N=1e6+5,lg=20,mod=1e9+7;
int n,h[N],dp[N],timt,m,k,up[N][lg+5],tin[N],tout[N],ans;
vector<int>a[N];
void dfs1(int u,int cha){
    for(int v:a[u]){
        if(v==cha)continue;
        dfs1(v,u);
        dp[u]+=dp[v];
    }
}
void dfs(int u,int cha){
    tin[u]=++timt;
 
 
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Compilation message (stderr)

railway.cpp:117:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  117 | main()
      | ^~~~

• Subtask 1: 0 / 8
• Subtask 2: 0 / 15
• Subtask 3: 7 / 7
• Subtask 4: 29 / 29
• Subtask 5: 0 / 16
• Subtask 6: 0 / 25