#include <stdio.h>
void main(){
int i, j, s=0;
for(i=1; i<10; i++){ //i=1~9
for (j=1; j<10; j++){ //j=1~9
if(j%2==0) continue; //j=1,3,5,7,9 s++ 5회
if(i%3==0) continue; //i=3,6,9
if(i%4==0) break; //i=4,8
s++;
}
}
printf("%d\n", s); //5+5+0+0+5+0+5+0+0=20
}
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