oj.uz

답안 #1066367

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1066367 2024-08-19T19:19:54 Z Minbaev Power Plant (JOI20_power) C++17
0 / 100
 0 ms 348 KB 
#include <bits/stdc++.h>
#define int long long
#define fi first
#define se second
 
using namespace std;
 
int32_t main()
{
        ios_base::sync_with_stdio(false);
        cin.tie(NULL);
        
        int n;
        cin >> n;
 
        vector<vector<int>> v(n + 1);
        for (int i = 0; i < n - 1; i++) {
                int a, b;
                cin >> a >> b;
 
                v[a].push_back(b);
                v[b].push_back(a);
        }
 
        vector<int> ok(n + 1);
        for (int i = 1; i <= n; i++) {
                char c;
                cin >> c;
 
                ok[i] = (c == '1');
        }
 
        int ans = 0;
        vector<int> dp(n + 1);
 
        function<void(int, int)> dfs = [&](int x, int p) {
                dp[x] = ok[x];
 
                int cur = -ok[x];
                for (auto z : v[x]) {
                        if (z == p) continue;
 
                        dfs(z, x);
 
                        cur += dp[z];
                }
 
                dp[x] = max(dp[x], cur);
                ans = max(ans, dp[x]);
        };
 
        dfs(1, 1);
 
        cout << ans << '\n';
        
        return 0;
}

Subtask #1
0.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Incorrect 0 ms 348 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 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Incorrect 0 ms 348 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 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Incorrect 0 ms 348 KB Output isn't correct
8 Halted 0 ms 0 KB -