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Cod sursa(job #529509)
#include <stdio.h>
#include <algorithm>
#define ma 3000005
using namespace std;
int n,k,A[ma],i;
FILE *f,*g;
void citire()
{
fscanf(f,"%d %d",&n,&k);
for (i=1;i<=n;i++)
fscanf(f,"%d",&A[i]);
}
int main()
{
f=fopen("sdo.in","r");
g=fopen("sdo.out","w");
citire();
nth_element(A+1,A+k,A+n+1);
fprintf(g,"%d",A[k]);
fclose(f);
fclose(g);
return 0;
}