#include <stdio.h>
int tri(int col, int x){
int i;
if(col==x){
for(i=1;i<=x;i++){
}
return 0;
}
else{
for(i=1;i<=col;i++){
}
tri(col+1, x);
}
}
int main(void) {
tri(1,6);
return 0;
}
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