oj.uz

Submission #659787

# Submission time Handle Problem Language Result Execution time Memory
659787 2022-11-19T09:26:09 Z PredescuSebastianIon Ronald (COCI17_ronald) C++11
0 / 120
 34 ms 1284 KB 
#include <iostream>
#include <algorithm>
#include <cstring>
#include <vector>
#include <cstdlib>
#include <climits>
#include <iomanip>
#include <cmath>

using namespace std;
constexpr int nmax = 1e3+2;
int n,m,x,y;
bool a[nmax][nmax];
void change(bool a[nmax][nmax],int x)
{
    for(int i=1;i<=n;i++)
    {
        a[i][x] = (a[i][x] == true ? false:true);
        a[x][i] = (a[x][i] == true ? false:true);
    }
    return;
}
bool verificare(bool a[nmax][nmax])
{
    for(int i=1;i<=n;i++)
    {
        if(a[i][2]==false)
        {
            change(a,i);
        }
    }
    for(int i=1;i<=n;i++)
    {
        for(int j=i+1;j<=n;j++)
        {
            if(a[i][j]==false)
            {
                return false;
            }
        }
    }
    return true;
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    cin>>n>>m;
    for(int i=1;i<=m;i++)
    {
        cin>>x>>y;
        a[x][y]=a[y][x]=true;
    }
    if(verificare(a)==true)
    {
        cout<<"DA"<<'\n';
        return 0;
    }
    cout<<"NE"<<'\n';
    return 0;
}

Subtask #1
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 0 ms 212 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Incorrect 0 ms 340 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Incorrect 0 ms 340 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 468 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 5 ms 724 KB Output is correct
3 Correct 21 ms 1236 KB Output is correct
4 Incorrect 34 ms 1284 KB Output isn't correct
5 Halted 0 ms 0 KB -