#include <stdio.h>
#include <stdlib.h>
int maxx(int a[],int n){int max=a[0],i;for(i=1;i<n;i++)if(max<a[i])max=a[i];return max;}
int main(void){int a[10],i;for(i=0;i<10;i++)a[i]=rand()%41+20;printf("%d\n",maxx(a,10));return 0;}