oj.uz

Submission #429099

# Submission time Handle Problem Language Result Execution time Memory
429099 2021-06-15T17:26:33 Z REALITYNB Toy Train (IOI17_train) C++14
22 / 100
 2000 ms 197488 KB 
#include <bits/stdc++.h>
#include "train.h"
using namespace std;
const int N = 5001 ;
vector<int> adj[N] ;
void dfs(int i , vector<int>&vis,bool flg , vector<int>& r ){
    vis[i]=1 ;
    for(int x: adj[i]){
        if(flg){
            if(vis[x]==0&&r[x]==0){
                dfs(x,vis,flg,r);
            }
            continue ;
        }
        if(vis[x]==0) dfs(x,vis,flg,r) ;
    }
    return ;
}
vector<int> who_wins0(vector<int> a,vector<int> r,vector<int> u,vector<int>v){
    int n = a.size() ;
    for(int i=0;i<u.size();i++)adj[u[i]].push_back(v[i]) ;
    vector<vector<int>> reachable(n) ;
    for(int i=0;i<n;i++){
        reachable[i].resize(n) ;
        dfs(i,reachable[i],0,r);
                reachable[i][i]=0 ;
        for(int x : adj[i]) if(x==i) reachable[i][i]=1;
    }
    vector<int> cycle(n) ;
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            if(reachable[i][j]&&reachable[j][i]){
                cycle[i]=1;
            }
        }
    }
    ////////////
    vector<vector<int>> reachablee(n) ;
    for(int i=0;i<n;i++){
        reachablee[i].resize(n);
        if(r[i]) continue ;
        dfs(i,reachablee[i],1,r) ;
        reachablee[i][i]=0;
        for(int x: adj[i]) if(x==i) reachablee[i][i]=1 ;
    }
    ////////////
    vector<int> cyclee(n) ;
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            if(reachablee[i][j]&&reachablee[j][i]){
                cyclee[j]=1;
            }
        }
    }


    ////////////
    vector<int> ans(n,1) ;
    for(int i=0;i<n;i++){
            for(int j=0;j<n;j++){
                if(adj[j].empty()&&(reachable[i][j]||i==j)){
                    ans[i]=0;
                    break;
                }
                if(cyclee[j]&&(reachable[i][j]||i==j)){
                    ans[i]=0 ;
                    break ;
                }
            }

    }
    return ans ;
}


vector<int> who_wins1(vector<int> a,vector<int> r,vector<int> u,vector<int>v){
    int n = a.size() ;
    for(int i=0;i<u.size();i++)adj[u[i]].push_back(v[i]) ;
    vector<vector<int>> reachable(n) ;
    for(int i=0;i<n;i++){
        reachable[i].resize(n) ;
        dfs(i,reachable[i],0,r);
                reachable[i][i]=0 ;
        for(int x : adj[i]) if(x==i) reachable[i][i]=1;
    }
    vector<int> cycle(n) ;
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            if(reachable[i][j]&&reachable[j][i]){
                cycle[i]=1;
            }
        }
    }
    vector<int> ans(n) ;
    for(int i=0;i<n;i++){
            for(int j=0;j<n;j++){
                if(cycle[j]&&(reachable[i][j]||i==j)&&r[j]){
                    ans[i]=1 ;
                    break ;
                }
            }

    }
    return ans ;
}
vector<int> who_wins(vector<int> a,vector<int> r,vector<int> u,vector<int>v){
    if(a[0]==0) return who_wins0(a,r,u,v);
    return who_wins1(a,r,u,v);
}

Compilation message

train.cpp: In function 'std::vector<int> who_wins0(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:21:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for(int i=0;i<u.size();i++)adj[u[i]].push_back(v[i]) ;
      |                 ~^~~~~~~~~
train.cpp: In function 'std::vector<int> who_wins1(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:78:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   78 |     for(int i=0;i<u.size();i++)adj[u[i]].push_back(v[i]) ;
      |                 ~^~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 539 ms 197220 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 332 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 460 ms 99504 KB Output is correct
2 Correct 571 ms 99476 KB Output is correct
3 Correct 531 ms 99448 KB Output is correct
4 Correct 1299 ms 99404 KB Output is correct
5 Correct 1038 ms 99528 KB Output is correct
6 Correct 905 ms 99504 KB Output is correct
7 Correct 711 ms 99432 KB Output is correct
8 Correct 664 ms 99484 KB Output is correct
9 Correct 646 ms 99464 KB Output is correct
10 Correct 618 ms 99344 KB Output is correct
11 Correct 609 ms 99520 KB Output is correct
12 Correct 182 ms 99364 KB Output is correct
13 Correct 1373 ms 99608 KB Output is correct
14 Correct 1375 ms 99616 KB Output is correct
15 Correct 1396 ms 99616 KB Output is correct
16 Correct 1379 ms 99608 KB Output is correct
17 Correct 1397 ms 99620 KB Output is correct
18 Correct 762 ms 99248 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1232 ms 197236 KB Output is correct
2 Correct 636 ms 197196 KB Output is correct
3 Correct 879 ms 197248 KB Output is correct
4 Correct 845 ms 197292 KB Output is correct
5 Correct 1219 ms 197324 KB Output is correct
6 Correct 1073 ms 197276 KB Output is correct
7 Correct 1102 ms 197476 KB Output is correct
8 Correct 841 ms 197252 KB Output is correct
9 Correct 252 ms 197252 KB Output is correct
10 Correct 1519 ms 197400 KB Output is correct
11 Correct 1495 ms 197488 KB Output is correct
12 Correct 1483 ms 197448 KB Output is correct
13 Correct 1597 ms 197396 KB Output is correct
14 Correct 1025 ms 197300 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2093 ms 151916 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 51.0

# Verdict Execution time Memory Grader output
1 Incorrect 539 ms 197220 KB 3rd lines differ - on the 14th token, expected: '1', found: '0'
2 Halted 0 ms 0 KB -