Submission #1184946

#	Time	Username	Problem	Language	Result	Execution time	Memory
1184946		InvMOD	Baloni (COCI15_baloni)	C++17	0 / 100	107 ms	3892 KiB

baloni

#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]]++;
      cnt++;
    }
    else{
      mp[a[i]]--;
      mp[a[i] - 1]++;
    }
  }
  
  cout << cnt << "\n";
  return 0;
}

• Subtask 1: 0 / 100