Pagini recente » Diferente pentru info-oltenia-2018/individual/clasament/9 intre reviziile 3 si 2 | Cod sursa (job #167984) | Istoria paginii runda/conchita/clasament | Cod sursa (job #2861444) | Cod sursa (job #1514232)
#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("litere.in");
ofstream fout("litere.out");
int n, ans, s[30];
char v[10001];
int main()
{
fin>>n;
int i,j;
for (i=1; i<=n; ++i)
fin>>v[i];
for (i=1; i<=n; ++i)
{
s[v[i]-96]++;
for (j=v[i]-96+1; j<=26; ++j)
ans+=s[j];
}
fout<<ans;
return 0;
}