Submission #576569

#	Time	Username	Problem	Language	Result	Execution time	Memory
576569		vqpahmad	Exam (eJOI20_exam)	C++14	0 / 100	1 ms	340 KiB

exam

#include <bits/stdc++.h>
#define ll long long
#define endl '\n'
#define all(a) a.begin(),a.end()
#define mod (ll)(10000007)
using namespace std;
const int mx = 1e6 + 15;




int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n;
    cin >> n;
    vector<pair<int,int>> ab(n);
    bool flag = 1;
    bool ans = 0;
    for (int i=0;i<n;i++){
        cin >> ab[i].first >> ab[i].second;
        if (i){
            if (ab[i].second!=ab[i-1].second){
                flag = 0;
            }
            if (ab[i].first==ab[i].second || ab[i-1].first==ab[i].second) ans =1;
        }
    }
    if (flag&&ans) cout << n ;
    else cout << 0 << endl;
    
}

• Subtask 1: 0 / 14
• Subtask 2: 0 / 12
• Subtask 3: 0 / 13
• Subtask 4: 0 / 23
• Subtask 5: 0 / 16
• Subtask 6: 0 / 22