제출 #1311151

#제출 시각아이디문제언어결과실행 시간메모리
1311151aryanLightning Rod (NOI18_lightningrod)C++20
0 / 100
1103 ms155408 KiB
#include<bits/stdc++.h> using namespace std; using i64 = long long; int main(){ ios_base::sync_with_stdio(false); cin.tie(NULL); int n; cin >> n; set<int> st; for(int i = 0;i < n;i++){ int x,y; cin >> x >> y; assert(y == 1); st.insert(x); } cout << (int) st.size() << '\n'; return 0; }
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