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Cod sursa(job #114910)
#include<stdio.h>
int i,n,sortat;
long nr;
char aux,v[10001];
int main()
{
freopen("litere.in","r",stdin);
freopen("litere.out","w",stdout);
scanf("%d\n",&n);
for(i=1;i<=n;i++)
scanf("%c",&v[i]);
do
{
sortat=1;
for(i=1;i<n;i++)
if(v[i]>v[i+1])
{
aux=v[i];
v[i]=v[i+1];
v[i+1]=aux;
nr++;
sortat=0;
}
}while(!sortat);
printf("%ld",nr);
return 0;
}