#include <bits/stdc++.h>
int a[1001000],n,i,b,sum=0;
using namespace std;
int main()
{
cin>>n;
for(i=0;i<n;i++)
{
scanf("%d",&b);
a[b]++;
}
for(i=0;i<=1001000;i++)
{
sum+=a[i]%2;
a[i+1]+=a[i]/2;
}
cout<<sum;
}
1629D - Peculiar Movie Preferences | 1629E - Grid Xor |
1629F1 - Game on Sum (Easy Version) | 2148. Count Elements With Strictly Smaller and Greater Elements |
2149. Rearrange Array Elements by Sign | 2150. Find All Lonely Numbers in the Array |
2151. Maximum Good People Based on Statements | 2144. Minimum Cost of Buying Candies With Discount |
Non empty subsets | 1630A - And Matching |
1630B - Range and Partition | 1630C - Paint the Middle |
1630D - Flipping Range | 1328A - Divisibility Problem |
339A - Helpful Maths | 4A - Watermelon |
476A - Dreamoon and Stairs | 1409A - Yet Another Two Integers Problem |
977A - Wrong Subtraction | 263A - Beautiful Matrix |
180C - Letter | 151A - Soft Drinking |
1352A - Sum of Round Numbers | 281A - Word Capitalization |
1646A - Square Counting | 266A - Stones on the Table |
61A - Ultra-Fast Mathematician | 148A - Insomnia cure |
1650A - Deletions of Two Adjacent Letters | 1512A - Spy Detected |