Submission #40703

#	Time	Username	Problem	Language	Result	Execution time	Memory
40703		Hassoony	Baloni (COCI15_baloni)	C++14	0 / 100	321 ms	604 KiB

baloni

#include <stdio.h>
#include <stdlib.h>
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef double D;
const ll inf=(1ll<<61);
const ll mod=1e9+7;
const int MX=1e6+9;
int n,a[MX],ans,x;
set<int>s;
int main(){
    cin>>n;
    for(int i=0;i<n;i++){
        scanf("%d",&x);
        if(s.find(x)!=s.end()){
            s.erase(s.find(x));
            x--;
            if(x>=1)s.insert(x);
            continue;
        }
        else s.insert(x-1),ans++;
    }
    cout<<ans<<endl;
}

Compilation message (stderr)

baloni.cpp: In function 'int main()':
baloni.cpp:15:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&x);
                       ^

• Subtask 1: 0 / 100