oj.uz

답안 #569995

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
569995 2022-05-28T12:26:08 Z OttoTheDino Power Plant (JOI20_power) C++17
0 / 100
 3 ms 4948 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define rep(i,s,e)                  for (int i = s; i <= e; ++i)
#define pb                          push_back
typedef vector<int> vi;
 
const int mx=2e5;
vi adj[mx+1];
int ans = 0;
string s;
 
int dfs (int u, int p) {
    int x = 0;
    for (int v : adj[u]) {
        if (v==p) continue;
        x += dfs (v, u);
    }
    if (s[u-1]=='1') {
        ans = max(ans, x+1);
        x = max(x-1, 1);
    }
    ans = max(ans, x);
    return x;
}
 
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
 
    int n;cin>>n;
    rep(i,1,n-1){
       int u,v; cin>>u>>v;
       adj[u].pb(v);
       adj[v].pb(u);
    }
    cin >> s;
    dfs (1,0);
    cout << ans << "\n";
    
    return 0;
}

Subtask #1
0.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Incorrect 3 ms 4948 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #2
0.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Incorrect 3 ms 4948 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #3
0.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Incorrect 3 ms 4948 KB Output isn't correct
8 Halted 0 ms 0 KB -