Cod sursa(job #2426821)

Utilizator sygAndreiIonitaIonita Andrei sygAndreiIonita Data 29 mai 2019 15:54:46
Problema Litere Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.35 kb
Raporteaza aceasta sursa 
#include <fstream>

using namespace std;

ifstream in ("litere.in");
ofstream out ("litere.out");

int nr[27];

int main()
{
    int n,i,cnt=0,j;
    char c;
    in>>n;
    for (i=1;i<=n;i++)
    {
      in>>c;
      nr[c-'a'+1]++;
      for (j=c-'a'+2;j<='z'-'a'+1;j++)
            cnt+=nr[j];
    }
    out<<cnt;
    return 0;
}