제출 #1283470

#제출 시각아이디문제언어결과실행 시간메모리
1283470uranhishigBaloni (COCI15_baloni)C++20
0 / 100
225 ms7432 KiB
#include <bits/stdc++.h> using namespace std; #define int long long #define all(a) (a).begin(),(a).end() #define rep(i, n) for(int i = 0; i < (n); i++) signed main(){ int n; cin >> n; vector<int> a(n); for (int i = 0; i < n; i++){ cin >> a[i]; } map<int, int> mp; int ans = 0; for (int i = 0; i < n; i++) { if(mp[a[i]] == 0) { mp[a[i]]--; ans++; mp[a[i]-1]++; // cout << "NEMEGDLEE" << endl; } else { mp[a[i]-1]++; } } cout << ans; return 0; }
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