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Submission #250865

# Submission time Handle Problem Language Result Execution time Memory
250865 2020-07-19T10:20:08 Z VEGAnn Zagrade (COI17_zagrade) C++14
10 / 100
 3000 ms 32780 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define PB push_back
#define all(x) x.begin(),x.end()
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
const int N = 300100;
vector<int> g[N];
int ad[N], n, ans = 0;
string s;

void dfs(int v, int p, int sm){
    if (sm < 0) return;

    if (sm == 0)
        ans++;

    for (int u : g[v]){
        if (p == u) continue;

        dfs(u, v, sm + ad[u]);
    }
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0);

#ifdef _LOCAL
    freopen("in.txt","r",stdin);
#endif // _LOCAL

    cin >> n >> s;

    for (int i = 0; i < n; i++)
        ad[i] = (s[i] == '(' ? 1 : -1);

    for (int i = 1; i < n; i++) {
        int x, y; cin >> x >> y;
        x--; y--;

        g[x].PB(y);
        g[y].PB(x);
    }

    for (int i = 0; i < n; i++)
        dfs(i, -1, ad[i]);

    cout << ans;

    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 7424 KB Output is correct
2 Correct 12 ms 7424 KB Output is correct
3 Correct 10 ms 7424 KB Output is correct
4 Correct 7 ms 7424 KB Output is correct
5 Correct 8 ms 7424 KB Output is correct
6 Correct 12 ms 7424 KB Output is correct
7 Correct 11 ms 7424 KB Output is correct
8 Correct 6 ms 7424 KB Output is correct
9 Correct 12 ms 7424 KB Output is correct
10 Correct 7 ms 7424 KB Output is correct

Subtask #2
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2777 ms 25292 KB Output is correct
2 Correct 123 ms 18572 KB Output is correct
3 Execution timed out 3066 ms 32780 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 7424 KB Output is correct
2 Correct 12 ms 7424 KB Output is correct
3 Correct 10 ms 7424 KB Output is correct
4 Correct 7 ms 7424 KB Output is correct
5 Correct 8 ms 7424 KB Output is correct
6 Correct 12 ms 7424 KB Output is correct
7 Correct 11 ms 7424 KB Output is correct
8 Correct 6 ms 7424 KB Output is correct
9 Correct 12 ms 7424 KB Output is correct
10 Correct 7 ms 7424 KB Output is correct
11 Correct 2777 ms 25292 KB Output is correct
12 Correct 123 ms 18572 KB Output is correct
13 Execution timed out 3066 ms 32780 KB Time limit exceeded
14 Halted 0 ms 0 KB -