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Cod sursa(job #947753)
#include<fstream>
using namespace std;
ifstream f("litere.in");
ofstream g("litere.out");
int n,i,nr;
char x[10002];
int main()
{
f>>n;
for(i=0;i<n;i++) f>>x[i];
int w;
do
{
w=0;
for(i=0;i<n-1;i++)
if(x[i]>x[i+1])
{
char aux=x[i];
x[i]=x[i+1];
x[i+1]=aux;
w=1;
nr++;
}
}
while(w==1);
g<<nr<<"\n";
g.close();
return 0;
}