Cod sursa(job #2220252)

Utilizator eduardandrei20Nechifor Eduard Andrei eduardandrei20 Data 10 iulie 2018 23:42:01
Problema Litere Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.35 kb
Raporteaza aceasta sursa 
#include <bits/stdc++.h>
std::ifstream in("litere.in");
std::ofstream out("litere.out");
using namespace std;
map <char,int>ap;
int main()
{ char p;
    int n;
    in >>n;
    int nr=0;
    while(n--)
    {
        in>>p;
        ap[p]++;
        for(char i=p+1;i<='z';++i)
            nr+=ap[i];
    }
    out<<nr;


    return 0;
}