Cod sursa(job #577405)

Utilizator theocmtAxenie Theodor theocmt Data 10 aprilie 2011 11:23:52
Problema Litere Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.33 kb
Raporteaza aceasta sursa 
#include<fstream.h>
#include<iostream.h>

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

int n;
long long nr;
int litere[27];
char s[10021];

int main() {
	int i,j;
	f>>n;
	f>>s;
	for(i=0; i<n; i++) 
	{
		for(j=s[i]-'a'+1; j<26; j++) 
		{
			nr+=litere[j];
		}
		litere[s[i]-'a']++;
	}
	g<<nr;
	return 0;
}