Submission #572831

#	Time	Username	Problem	Language	Result	Execution time	Memory
572831		Devigo	Lightning Rod (NOI18_lightningrod)	C++14	0 / 100	2103 ms	213956 KiB

Main

#include <bits/stdc++.h>
using namespace std;

#define pb push_back
#define mp make_pair

const int siz = 0;
const int mod = 0;

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	int n;
	cin >> n;
	vector<pair<int,int>> v(n);
	for(int i=0; i<n; i++) {
		cin >> v[i].first >> v[i].second;
	}
	int cnt = 0;
	map<int,int> m;
	for(int i=0; i<n; i++) {
		m[v[i].first]++;
		if(m[v[i].first] == 1) cnt++;
	}
	cout << cnt << "\n";
	return 0;
}

• Subtask 1: 0 / 4
• Subtask 2: 0 / 7
• Subtask 3: 0 / 12
• Subtask 4: 0 / 21
• Subtask 5: 0 / 26
• Subtask 6: 0 / 10
• Subtask 7: 0 / 20