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Cod sursa(job #829799)
#include<stdio.h>
FILE*f=fopen("algsort.in","r");
FILE*g=fopen("algsort.out","w");
int n,p,nr,c[10],v[500001],w[500001],max;
int main()
{
fscanf(f,"%d",&n);
for(int i=1;i<=n;++i)
{
fscanf(f,"%d",&v[i]);
if(max<v[i])
max=v[i];
}
while(max)
{
++nr;
max/=10;
}
int p=1;
for(int j=1;j<=nr;++j)
{
for(int i=0;i<=9;++i)
c[i]=0;
for(int i=1;i<=n;++i)
c[(v[i]/p)%10]++;
for(int i=1;i<=9;++i)
c[i]+=c[i-1];
for(int i=n;i;--i)
w[c[(v[i]/p)%10]--]=v[i];
for(int i=1;i<=n;++i)
v[i]=w[i];
p*=10;
}
for(int i=1;i<=n;++i)
fprintf(g,"%d ",v[i]);
fclose(f);
fclose(g);
return 0;
}