제출 #1184950

#제출 시각아이디문제언어결과실행 시간메모리
1184950InvMODBaloni (COCI15_baloni)C++17
100 / 100
107 ms3892 KiB
#include<bits/stdc++.h> using namespace std; const int N = 1e6 + 5; int mp[N]; int main(){ int n; cin >> n; vector<int> a(n, 0); for(int i = 0; i < n; i++){ cin >> a[i]; } int cnt = 0; for(int i = 0; i < n; i++){ if(!mp[a[i]]){ mp[a[i] - 1]++; cnt++; } else{ mp[a[i]]--; mp[a[i] - 1]++; } } cout << cnt << "\n"; return 0; }
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