#include <stdio.h>
int main(){
    char in[1000];
    struct{int carry;int times;} list[] = { {0,0}, {20,3}, {40,6}, {60,9}, {10,2}, {30,5}, {50,8}, {0,1}, {20,4}, {40,7} };
    printf("Target: ");
    gets(in);
    int target = strtol( in, 0, 10 ), j, i,save[4];
    for( i = 3; i >= 0; --i ){
        j = target - target / 10 * 10;
        save[i] = list[j].times;
        target = ( target - list[j].carry ) / 10;
    }
    for( i = 0; i < 4; ++i )
        printf("%i%c", save[i], i < 3 ? '>' : ' ' );
}