#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int g=0;
void un(int n){
if(n>0){
int r;
if(r==0){
un(n+1);
}else{
g=g+1;
un(n-1);
}
}
}
int main(void) {
un(100);
return 0;
}
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