Cod sursa(job #1451244)

Utilizator adiXMGemene Adrian adiXM Data 16 iunie 2015 17:15:43
Problema Litere Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.34 kb
Raporteaza aceasta sursa 
#include <fstream>
using namespace std;
ifstream f("litere.in");
ofstream g("litere.out");
char s[10005];
int v[105];
int main()
{
    int n,sol=0;
    f>>n;
    f>>(s+1);
    for(int i=1;i<=n;i++)
    {
        for(char j=s[i]+1;j<='z';j++)
            sol+=v[j-'a'];
        v[s[i]-'a']++;
    }
    g<<sol;
    return 0;
}