제출 #1242378

#제출 시각아이디문제언어결과실행 시간메모리
1242378iyedooInfinite Race (EGOI24_infiniterace2)C++20
29 / 100
30 ms328 KiB
#include <bits/stdc++.h> using namespace std; int main() { int n, q; cin >> n >> q; int cnt = 0; vector<bool> passed(n, 0); for (int i = 0; i < q; ++i) { int x; cin >> x; if (x > 0) { if (passed[x]) cnt++; else passed[x] = 1; } else { passed[abs(x)] = 0; // if (passed[abs(x)] == 0) cnt--; } } cout << cnt << "\n"; return 0; }
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