codeforces Pangram in c++
/*
problem:
https://codeforces.com/problemset/problem/520/A
*/
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#include<iostream>
#include<algorithm>
#include<vector>
using namespace std;
int main()
{
int n;
cin >> n;
char ch;
vector<char> v;
for (int i = 0; i < n; i++)
{
cin >> ch;
v.push_back(ch);
}
//
for (int i = 0; i < n; i++)
{
if (v[i] >= 'a' && v[i] <= 'z')
v[i] -= 32;
}
sort(v.begin(), v.end());
v.erase(unique(v.begin(), v.end()), v.end());
int count = 0;
for (int i = 0; i < v.size(); i++)
{
if ((v[i] >= 'A' && v[i] <= 'Z') || (v[i] >= 'a' && v[i] <= 'z'))
count++;
}
if (count >= 26)
cout << "YESn";
else
cout << "NOn";
return 0;
}