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Submission #434258

# Submission time Handle Problem Language Result Execution time Memory
434258 2021-06-20T20:04:30 Z Monchito Toy Train (IOI17_train) C++14
5 / 100
 2000 ms 1356 KB 
#include "train.h"
#include <algorithm>
using namespace std;

const int MAXN = 5e3;

int n, m;
int G[MAXN];
bool vis[MAXN];

void DFS(int u, int& ret, vector<int>& r) {
    vis[u] = true;
    if(G[u] == u) {
        ret = (r[u]==1)? 1 : 0;
        return;
    }
    DFS(G[u], ret, r);
}

vector<int> who_wins(vector<int> a, vector<int> r, vector<int> u, vector<int> v) {
    n = (int)a.size();
    m = (int)u.size();
    vector<vector<int>> graph(n);
    vector<pair<int,int>> edges(m);

    for(int i=0; i<m; i++)
        edges[i] = make_pair(u[i], v[i]);

    sort(edges.begin(), edges.end());

    for(int i=0; i<m; i++) 
        graph[edges[i].first].push_back(edges[i].second); 
    
    for(int i=0; i<n; i++) {
        if((int)graph[i].size() == 1) { G[i] = graph[i][0]; continue; }
        
        if(a[i] == 1)
            (r[i]==1)? G[i] = graph[i][0] : G[i] = graph[i][1];
        
        else 
            (r[i]==1)? G[i] = graph[i][1] : G[i] = graph[i][0];
    }

    int current;
    vector<int> ans(n);
    
    for(int i=0; i<n; i++) {
        if(!vis[i]) {
            DFS(i, current, r); 
        }

        ans[i] = current;
    }
    
    return ans;
}

Compilation message

train.cpp: In function 'std::vector<int> who_wins(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:52:16: warning: 'current' may be used uninitialized in this function [-Wmaybe-uninitialized]
   52 |         ans[i] = current;

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 844 KB Output is correct
2 Correct 5 ms 844 KB Output is correct
3 Correct 5 ms 844 KB Output is correct
4 Correct 5 ms 808 KB Output is correct
5 Correct 5 ms 844 KB Output is correct
6 Correct 5 ms 844 KB Output is correct
7 Correct 5 ms 844 KB Output is correct
8 Correct 5 ms 844 KB Output is correct
9 Correct 5 ms 844 KB Output is correct
10 Correct 5 ms 844 KB Output is correct
11 Correct 4 ms 804 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2072 ms 204 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2049 ms 1356 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2076 ms 1100 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2063 ms 1316 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 844 KB Output is correct
2 Correct 5 ms 844 KB Output is correct
3 Correct 5 ms 844 KB Output is correct
4 Correct 5 ms 808 KB Output is correct
5 Correct 5 ms 844 KB Output is correct
6 Correct 5 ms 844 KB Output is correct
7 Correct 5 ms 844 KB Output is correct
8 Correct 5 ms 844 KB Output is correct
9 Correct 5 ms 844 KB Output is correct
10 Correct 5 ms 844 KB Output is correct
11 Correct 4 ms 804 KB Output is correct
12 Execution timed out 2072 ms 204 KB Time limit exceeded
13 Halted 0 ms 0 KB -