/CTest007 - Hệ cơ số 3
<Problem>
https://code.ptit.edu.vn/student/question/CTest007#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <math.h>
int main() {
int t;
scanf("%d", &t);
getchar();
while (t--) {
char s[100];
gets(s);
bool check = true;
for (int i = 0; i < strlen(s); i++) {
if (s[i] == '1' || s[i] == '2' || s[i] == '0') {
check = true;
}
else {
check = false;
break;
}
}
if (check == true) printf("YES");
else printf("NO");
printf("\n");
}
return 0;
}