Submission #2011222

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Source Code Expand

#include <math.h>
#include <ctype.h>
#include <bits/stdc++.h>
using namespace std;
#define FOR(i, a, n) for (int i = a; i < n; i++)
#define REP(i, n) for(int i = 0; i < n; i++)
struct omt{omt(){ios::sync_with_stdio(false);cin.tie(0);}}star;

int main(){
    int n;
    cin >> n;
    vector<int> A(n);
    for(auto &x : A) cin >> x;

    unordered_map<int, int> mp;
    REP(i, n){
        mp[A[i]]++;
    }
    int cnt = 0;
    for(auto &x : mp){
        if(x.first < x.second){
            cnt += x.second - x.first;
        }else if(x.first > x.second){
            cnt += x.second;
        }
    }
    cout << cnt << endl;

    return 0;
}

Submission Info

Judge Result