#include <stdio.h>
int main(void) {
int i,ichi,ju,hyaku,sen,count=0;
for(i=0;i<10000;i++){
ichi = i % 10;
ju = (i / 10) % 10;
hyaku = (i / 100) % 10;
sen = (i / 1000) % 10;
if ((ichi + ju + hyaku + sen) % 7 == 3)
count++;}
return 0;
}
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