Submission #713482

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
713482	2023-03-22T09:11:13 Z	MohamedFaresNebili	Toy Train (IOI17_train)	C++14	0 / 100	279 ms	262144 KB

train

#include <bits/stdc++.h>

        using namespace std;

        int N, M, timer, tin[5001], low[5001];
        vector<int> adj[5001], G[5001], S;
        bool vis[5001], self[5001], Scc[5001], ST[5001];
        int  DP[5001][5001];

        void dfs(int v) {
            tin[v] = low[v] = timer++;
            vis[v] = 1; S.push_back(v);
            for(auto u : G[v]) {
                if(tin[u] == -1) dfs(u);
                if(vis[u]) low[v] = min(low[v], low[u]);
            }
            if(tin[v] == low[v]) {
                vector<int> V;
                while(1) {
                    int U = S.back(); S.pop_back();
                    vis[U] = 0; V.push_back(U);
                    if(U == v) break;
                }
                if(V.size() == 1) return;
                for(auto u : V) {
                    Scc[u] = 1;
                }
            }
        }
        int solve(int v, int t) {
            if(Scc[v]) return 1;
            if(DP[v][t] != -1) return DP[v][t];
            if(ST[v]) t = N;
            if(DP[v][t] != -1) return DP[v][t];
            if(t) {
                for(auto u : adj[v]) {
                    if(solve(u, t - 1))
                        return DP[v][t] = 1;
                }
            }
            if(ST[v] == 0 && adj[v].size() == 0)
                return DP[v][t] = 1;
            return DP[v][t] = 0;
        }

        vector<int> who_wins(vector<int> A, vector<int> R,
                             vector<int> U, vector<int> V) {
            N = A.size(), M = U.size();
            for(int l = 0; l < N; l++)
                ST[l] = R[l];
            for(int l = 0; l < M; l++) {
                int X = U[l], Y = V[l];
                if(X == Y) {
                    self[X] = 1;
                    if(ST[X] == 0) Scc[X] = 1;
                    continue;
                }
                adj[X].push_back(Y);
                if(ST[X] == ST[Y] && ST[X] == 0)
                    G[X].push_back(Y);
            }
            memset(tin, -1, sizeof tin);
            memset(DP, -1, sizeof DP);
            for(int l = 0; l < N; l++) {
                if(tin[l] != -1) continue;
                dfs(l);
            }
            vector<int> res(N);
            for(int l = 0; l < N; l++)
                res[l] = 1 - solve(l, N);
            return res;
        }

Subtask #1
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	45 ms	98900 KB	3rd lines differ - on the 14th token, expected: '1', found: '0'
2	Halted	0 ms	0 KB	-

Subtask #2
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	37 ms	98384 KB	3rd lines differ - on the 2nd token, expected: '1', found: '0'
2	Halted	0 ms	0 KB	-

Subtask #3
0 / 11.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	279 ms	99944 KB	Output is correct
2	Correct	108 ms	99664 KB	Output is correct
3	Correct	46 ms	99460 KB	Output is correct
4	Incorrect	48 ms	99516 KB	3rd lines differ - on the 1st token, expected: '1', found: '0'
5	Halted	0 ms	0 KB	-