Miscellany

#include <stdio.h>

int main() {

        int y, x;
        y = 20;

        while(1) {

                for(x = 20; x >= 1; x--) {
                        if(y % x != 0) break;
                        if(x == 1) {
                                printf("%d\n", y);
                                return 0;
                        }
                }
        y += 20;

        }

}