제출 #546898

#제출 시각아이디문제언어결과실행 시간메모리
546898Ahmed57Baloni (COCI15_baloni)C++14
100 / 100
342 ms7320 KiB
#include<bits/stdc++.h>

using namespace std;

int main(){
    int n;
    cin>>n;
    int arr[n];
    for(int i =  0;i<n;i++)cin>>arr[i];
    map<int,int> mp;
    int ans = 0;
    for(int i = 0;i<n;i++){
        if(mp[arr[i]]){
            mp[arr[i]]--;
            mp[arr[i]-1]++;
        }else{
            mp[arr[i]-1]++;
            ans++;
        }
    }
    cout<<ans<<"\n";
}
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