제출 #955594

#제출 시각아이디문제언어결과실행 시간메모리
955594KakarotAdvertisement 2 (JOI23_ho_t2)C++98
10 / 100
350 ms45844 KiB
#include <bits/stdc++.h>
#define int int64_t
using namespace std;

void setIO() {
    cin.tie(0)->sync_with_stdio(0);
}

void solve() {
    //cout << "zco";
    int n;
    cin >> n;
    vector<int> x(n), e(n);
    map<int, int> f;
    for(int i = 0; i < n; i++) {
        cin >> x[i] >> e[i];
        f[x[i]]++;
    }
    cout << f.size();
}

int32_t main() {
    setIO();
    solve();
    return 0;
}
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