Submission #413062

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
413062	2021-05-28T07:49:11 Z	조영욱(#7624)	Toy Train (IOI17_train)	C++14	11 / 100	841 ms	1824 KB

train

#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++){
        adj[u[i]].push_back(v[i]);
        rev[v[i]].push_back(u[i]);
    }
    for(int i=0;i<n;i++) {
        if (r[i]==0) {
            continue;
        }
        memset(vis,0,sizeof(vis));
        dfs(i);
        for(int j=0;j<rev[i].size();j++) {
            if (vis[rev[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]=1;
        }
        else {
            ret[i]=0;
        }
    }
    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:34:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |         for(int j=0;j<rev[i].size();j++) {
      |                     ~^~~~~~~~~~~~~~
train.cpp:52:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |         for(int i=0;i<rev[now].size();i++) {
      |                     ~^~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	151 ms	1388 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	588 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	14 ms	1612 KB	Output is correct
2	Correct	34 ms	1732 KB	Output is correct
3	Correct	62 ms	1752 KB	Output is correct
4	Correct	357 ms	1732 KB	Output is correct
5	Correct	47 ms	1740 KB	Output is correct
6	Correct	84 ms	1676 KB	Output is correct
7	Correct	246 ms	1612 KB	Output is correct
8	Correct	12 ms	1612 KB	Output is correct
9	Correct	11 ms	1564 KB	Output is correct
10	Correct	11 ms	1612 KB	Output is correct
11	Correct	9 ms	1612 KB	Output is correct
12	Correct	8 ms	1484 KB	Output is correct
13	Correct	10 ms	1800 KB	Output is correct
14	Correct	10 ms	1816 KB	Output is correct
15	Correct	10 ms	1824 KB	Output is correct
16	Correct	10 ms	1740 KB	Output is correct
17	Correct	10 ms	1804 KB	Output is correct
18	Correct	183 ms	1428 KB	Output is correct