제출 #895531

#제출 시각아이디문제언어결과실행 시간메모리
895531LiuBruhAdvertisement 2 (JOI23_ho_t2)C++17
10 / 100
288 ms30800 KiB
#include <bits/stdc++.h> #define int long long #define sz(v) (int)v.size() using namespace std; const int maxn = (int)5e5 + 5; const int INF = (int)1e18 + 5; int n; set<int> st; void solve() { cin >> n; for (int i = 1; i <= n; i++) { int a, b; cin >> a >> b; st.insert(a); } cout << sz(st) << '\n'; } signed main() { ios_base::sync_with_stdio(false), cin.tie(0), cout.tie(0); solve(); return 0; }
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