1200%AC

#include<cstdio>
void num(int x,int y){
    for(int i=y;i>=x;i--)printf("%d ",i);
}
int main(){
    int n,x,y;
    scanf("%d %d %d",&n,&x,&y);
    for(int i;i<n;i++){
        num(x,y);printf("\n");
    }
}