Submission #789447

#	Time	Username	Problem	Language	Result	Execution time	Memory
789447		Acanikolic	Baloni (COCI15_baloni)	C++14	100 / 100	221 ms	7324 KiB

baloni

#include <bits/stdc++.h>
 
#define ll long long 

#define int long long 
 
#define pb push_back 

#define F first
 
#define S second
 
using namespace std;
 
const long long N = 2e5+10;
 
const long long mod = 1e9+7;
 
const long long inf = 1e18;

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    
	int n,res = 0;
	cin >> n;
	vector<int>a(n);
	for(int i=0;i<n;i++) cin >> a[i];
	map<int,int>mp;
	for(int i=0;i<n;i++) {
		if(!mp[a[i]]) res++;
		if(mp[a[i]] > 0) mp[a[i]] -= 1;
		mp[a[i]-1] += 1;
	}
	cout << res;
    return 0;
}

• Subtask 1: 100 / 100