oj.uz

Submission #413057

# Submission time Handle Problem Language Result Execution time Memory
413057 2021-05-28T07:42:30 Z 조영욱(#7624) Toy Train (IOI17_train) C++14
11 / 100
 1217 ms 1988 KB 
#include "train.h"
#include <bits/stdc++.h>
using namespace std;

vector<int> adj[5000];
bool vis[5000];
vector<int> rev[5000];
vector<int> rrev[5000];
bool cycle[5000];

void dfs(int v) {
    vis[v]=true;
    for(int i=0;i<adj[v].size();i++) {
        int nt=adj[v][i];
        if (!vis[nt]) {
            dfs(nt);
        }
    }
}

vector<int> who_wins(vector<int> a, vector<int> r, vector<int> u, vector<int> v) {
    int n=a.size();
    int m=u.size();
    for(int i=0;i<m;i++) {
        if (r[u[i]]==0&&r[v[i]]==0) {
            adj[u[i]].push_back(v[i]);
            rrev[v[i]].push_back(u[i]);
        }
    }
    for(int i=0;i<m;i++){
        rev[v[i]].push_back(u[i]);
    }
    for(int i=0;i<n;i++) {
        memset(vis,0,sizeof(vis));
        dfs(i);
        for(int j=0;j<rrev[i].size();j++) {
            if (vis[rrev[i][j]]) {
                cycle[i]=true;
                break;
            }
        }
    }
    memset(vis,0,sizeof(vis));
    queue<int> q;
    for(int i=0;i<n;i++) {
        if (cycle[i]) {
            q.push(i);
            vis[i]=true;
        }
    }
    while (!q.empty()) {
        int now=q.front();
        q.pop();
        for(int i=0;i<rev[now].size();i++) {
            int nt=rev[now][i];
            if (!vis[nt]) {
                vis[nt]=true;
                q.push(nt);
            }
        }
    }
    vector<int> ret(n);
    for(int i=0;i<n;i++) {
        if (vis[i]) {
            ret[i]=0;
        }
        else {
            ret[i]=1;
        }
    }
    return ret;
}

Compilation message

train.cpp: In function 'void dfs(int)':
train.cpp:13:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for(int i=0;i<adj[v].size();i++) {
      |                 ~^~~~~~~~~~~~~~
train.cpp: In function 'std::vector<int> who_wins(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:36:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |         for(int j=0;j<rrev[i].size();j++) {
      |                     ~^~~~~~~~~~~~~~~
train.cpp:54:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |         for(int i=0;i<rev[now].size();i++) {
      |                     ~^~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 8 ms 1100 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 1 ms 588 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 109 ms 1984 KB Output is correct
2 Correct 36 ms 1836 KB Output is correct
3 Correct 12 ms 1704 KB Output is correct
4 Incorrect 531 ms 1640 KB 3rd lines differ - on the 1st token, expected: '1', found: '0'
5 Halted 0 ms 0 KB -

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 1228 KB Output is correct
2 Correct 121 ms 1680 KB Output is correct
3 Correct 163 ms 1756 KB Output is correct
4 Correct 30 ms 1604 KB Output is correct
5 Correct 344 ms 1860 KB Output is correct
6 Correct 262 ms 1828 KB Output is correct
7 Correct 240 ms 1804 KB Output is correct
8 Correct 103 ms 1612 KB Output is correct
9 Correct 8 ms 1484 KB Output is correct
10 Correct 9 ms 1536 KB Output is correct
11 Correct 9 ms 1484 KB Output is correct
12 Correct 9 ms 1444 KB Output is correct
13 Correct 629 ms 1988 KB Output is correct
14 Correct 372 ms 1780 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 1217 ms 1848 KB 3rd lines differ - on the 1st token, expected: '1', found: '0'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 51.0

# Verdict Execution time Memory Grader output
1 Incorrect 8 ms 1100 KB 3rd lines differ - on the 14th token, expected: '1', found: '0'
2 Halted 0 ms 0 KB -