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Cod sursa(job #799383)
#include <cstdio>
using namespace std;
int a[100000],n;
void interclas(int lo,int mid,int hi)
{
int b[100000];
int x=lo;
int y=mid+1;
int k=1;
while(x<=mid && y<=hi)
if(a[x]<a[y]){b[k++]=a[x++];}
else {b[k++]=a[y++];}
while(x<=mid)
b[k++]=a[x++];
while(y<=hi)
b[k]=a[y];
int t=lo;
for(k=1;k<=(hi-lo)+1;k++)
a[t++]=b[k];
}
void merge(int lo,int hi)
{
if(lo<hi){
int mid=lo+(hi-lo)/2;
merge(lo,mid);
merge(mid+1,hi);
interclas(lo,mid,hi);}
}
int main()
{
freopen("algsort.in","r",stdin);
freopen("algsort.out","w",stdout);
scanf("%d",&n);
int i;
for(i=1;i<=n;i++)
scanf("%d",&a[i]);
merge(1,n);
for(i=1;i<=n;i++)
printf("%d ",a[i]);
return 0;
}