Cod sursa(job #2905176)

Utilizator AdrianRosuRosu Adrian Andrei AdrianRosu Data 19 mai 2022 23:14:08
Problema Litere Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.33 kb
Raporteaza aceasta sursa 
#include<bits/stdc++.h>
using namespace std;
ifstream fin("litere.in");
ofstream fout("litere.out");
vector <int> freq(26);
int i, j, n, number;
char s;
int main(){
fin>>n;
for(i=1;i<=n;i++){
    fin>>s;
    freq[s-'a']++;
    for(j=s-'a'+1;j<='z'-'a';j++){
        number+=freq[j];
    }
}
fout<<number;
return 0;
}