oj.uz

Submission #1070773

# Submission time Handle Problem Language Result Execution time Memory
1070773 2024-08-22T18:18:50 Z Ahmed57 Toy Train (IOI17_train) C++17
23 / 100
 178 ms 1768 KB 
#include "bits/stdc++.h"
 
using namespace std;
vector<int> who_wins(vector<int> a,vector<int> r,vector<int> u,vector<int> v){
    int n = a.size();
    int m = u.size();
    vector<int> adj[n+1],rev[n+1];
    for(int i = 0;i<u.size();i++){
        adj[u[i]].push_back(v[i]);
        rev[v[i]].push_back(u[i]);
    }
    vector<int> ans(n,1);
    int deg[n+1] = {0};
    int vis[n+1] = {0};
    while(1){
        for(int i = 0;i<n;i++){
            if(ans[i]){
                vis[i] = 0;
                deg[i] = 0;
                for(auto j:adj[i]){
                    if(ans[j])deg[i]++;
                }
            }
        }
        queue<int> q;
        for(int i = 0;i<n;i++){
            if(ans[i]&&r[i]){
                q.push(i);
            }
        }
        while(!q.empty()){
            int x = q.front();q.pop();
            for(auto i:rev[x]){
                deg[i]--;
                if(ans[i]&&(deg[i]==0||a[i]==1)&&!vis[i]){
                    vis[i] = 1;
                    q.push(i);
                }
            }
        }
        bool upd = 0;
        for(int i = 0;i<n;i++){
            int old = ans[i];
            ans[i]&=vis[i];
            if(old!=ans[i])upd = 1;
        }
        if(upd==0)break;
    }
    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:8:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |     for(int i = 0;i<u.size();i++){
      |                   ~^~~~~~~~~
train.cpp:6:9: warning: unused variable 'm' [-Wunused-variable]
    6 |     int m = u.size();
      |         ^

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 1116 KB 3rd lines differ - on the 22nd 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 348 KB 3rd lines differ - on the 8th token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 59 ms 1624 KB Output is correct
2 Correct 105 ms 1768 KB Output is correct
3 Correct 154 ms 1760 KB Output is correct
4 Correct 6 ms 1624 KB Output is correct
5 Correct 10 ms 1608 KB Output is correct
6 Correct 8 ms 1628 KB Output is correct
7 Correct 5 ms 1628 KB Output is correct
8 Correct 6 ms 1628 KB Output is correct
9 Correct 4 ms 1628 KB Output is correct
10 Correct 6 ms 1496 KB Output is correct
11 Correct 6 ms 1576 KB Output is correct
12 Correct 5 ms 1628 KB Output is correct
13 Correct 6 ms 1628 KB Output is correct
14 Correct 6 ms 1628 KB Output is correct
15 Correct 6 ms 1624 KB Output is correct
16 Correct 6 ms 1604 KB Output is correct
17 Correct 6 ms 1628 KB Output is correct
18 Correct 178 ms 1176 KB Output is correct

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 1372 KB 3rd lines differ - on the 696th token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 1628 KB Output is correct
2 Correct 6 ms 1628 KB Output is correct
3 Correct 6 ms 1520 KB Output is correct
4 Correct 5 ms 1628 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 3 ms 1112 KB Output is correct
7 Correct 4 ms 1116 KB Output is correct
8 Correct 3 ms 1116 KB Output is correct
9 Correct 3 ms 1116 KB Output is correct
10 Correct 1 ms 508 KB Output is correct
11 Correct 3 ms 1116 KB Output is correct

Subtask #6
0 / 51.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 1116 KB 3rd lines differ - on the 22nd token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -