OJ Board

Why wrong answer on following code ?
#include <stdio.h>
int main() {
long long int i,m,a,b,c;
scanf("%lld",&m);


for(i=1; i<=m; i++) {
scanf("%lld %lld %lld",&a,&b,&c);

printf("Case %lld: ", i);

if(a<=0 || b<=0 || c<=0) {
printf("Invalid\n");
continue;
}

if(a==b && b==c) {
printf ...