Cod sursa(job #1264880)

Utilizator cojocarugabiReality cojocarugabi Data 16 noiembrie 2014 14:04:20
Problema Litere Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.3 kb
Raporteaza aceasta sursa 
# include <bits/stdc++.h>
using namespace std;
ifstream fi("litere.in");
ofstream fo("litere.out");
char c[int(1e4+5)];
int s[255];
int main(void)
{
    int n,ans=0;
    fi>>n>>c;
    for (int i=0;c[i];++s[c[i]],++i) for (int j=c[i]+1;j<='z';++j) ans+=s[j];
    return fo << ans << '\n',0;
}