제출 #1088819

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1088819		Bismillah	무제 (POI11_kon)	C++17	10 / 100	3093 ms	107200 KiB

Main

#include <bits/stdc++.h>
 
using namespace std;
 
#define all(v) v.begin(), v.end()
typedef long long ll;
const int NMAX = 1e5 + 5;
int n, deg[NMAX], cnt[NMAX], ans, x, a, b;
 
int main(void){
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    
    cin >> n;
    for(int i = 0; i < n; i++){
        cin >> deg[i]; cnt[deg[i]]++; b += deg[i];
        for(int j = 0; j < deg[i]; j++) cin >> x;
    }
    
    sort(deg, deg + n); x = 0;
  	vector<int> counter(n+2, 0);
    for(int i = n - 1; i; i--){
        a += deg[i]; b -= deg[i]; x++;
        if(a - b == x * (x - 1)){
          	++counter[deg[i]];
          	if (counter[deg[i]] > 1) while(1);
            if(deg[i] == deg[i - 1]) ans += cnt[deg[i]];
            else ans++;
        }
    }
    cout << ans;
    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
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• Subtask 10: 0 / 10