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Cod sursa(job #308110)
#include <fstream>
using namespace std;
#define dim 500001
long a[dim],n;
ifstream f("algsort.in");
ofstream g("algsort.out");
void interc(long l,long m,long r)
{
long k,i,j,x[dim],t;
k=i=l;
j=m+1;
while(i<=m&&j<=r)
{
if(a[i]<=a[j])
x[k++]=a[i++];
else
x[k++]=a[j++];
}
for(t=i;t<=m;t++)
x[k++]=a[t];
for(t=j;t<=r;t++)
x[k++]=a[t];
//for(t=(i<=m)?(i):(j);t<=((i<=m)?(m):(r));t++)
// x[k++]=a[t];
for(t=l;t<=r;t++)
a[t]=x[t];
}
void msort(long l,long r)
{
long m=(l+r)/2;
if(l==r)
return;
msort(l,m);
msort(m+1,r);
interc(l,m,r);
}
int main()
{
f>>n;
long i;
for(i=1;i<=n;i++)
f>>a[i];
msort(1,n);
for(i=1;i<=n;i++)
g<<a[i]<<" ";
return 0;
}