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Submission #641663

# Submission time Handle Problem Language Result Execution time Memory
641663 2022-09-17T12:00:42 Z piOOE Toy Train (IOI17_train) C++17
0 / 100
 2000 ms 1768 KB 
#include <bits/stdc++.h>
#include "train.h"

using namespace std;
using ll = long long;

std::vector<int> who_wins(std::vector<int> a, std::vector<int> r, std::vector<int> A, std::vector<int> B) {
    int n = a.size(), m = A.size();
    vector<vector<int>> g(n);
    for (int i = 0; i < m; ++i) {
        g[A[i]].push_back(B[i]);
    }
    vector<int> ans(n);
    for (int root = 0; root < n; ++root) {
        vector<bool> dp(n), used(n);
        vector<int> stk, last = {-1};
        vector<int> in_stk(n, -1);
        function<void(int)> dfs = [&](int v) {
            used[v] = true;
            in_stk[v] = stk.size();
            stk.push_back(v);
            if (r[v]) {
                last.push_back(last.size());
            } else {
                last.push_back(last.back());
            }
            for (int to: g[v]) {
                if (in_stk[to] != -1) {
                    if (a[v] ^ (last.back() < in_stk[to])) {
                        dp[v] = true;
                    }
                } else {
                    if (!used[to]) {
                        dfs(to);
                    }
                    if (a[v] ^ a[to] ^ dp[to]) {
                        dp[v] = true;
                    }
                }
            }
            stk.pop_back();
            last.pop_back();
            in_stk[v] = -1;
        };
        dfs(root);
        ans[root] = dp[root] ^ a[root] ^ 1;
    }
    return ans;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 544 ms 1400 KB 3rd lines differ - on the 1st token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 300 KB 3rd lines differ - on the 1st token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 464 ms 1768 KB 3rd lines differ - on the 1st token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 1372 ms 1352 KB 3rd lines differ - on the 696th token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2045 ms 1492 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 51.0

# Verdict Execution time Memory Grader output
1 Incorrect 544 ms 1400 KB 3rd lines differ - on the 1st token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -