Cod sursa(job #1541631)
Utilizator | Data | 4 decembrie 2015 14:29:15 | |
---|---|---|---|
Problema | Litere | Scor | 40 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.37 kb |
#include<fstream>
using namespace std;
ifstream fin("litere.in");
ofstream fout("litere.out");
int n,x,y,i,j;
char S[10005],v[130];
int main ()
{
fin>>n;
fin>>S;
x=0;
v[S[0]-'a']=1;
for(i=1;i<n;i++)
{
y=x;
v[S[i]-'a']++;
for(char j=S[i]-'a'+1;j<='z'-'a';j++)
y=y+v[j];
x=y;
}
fout<<y;
}