cses

cses solutions in pure c
git clone git://git.superpozycja.net/cses
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s.c (416B)

      1 #include <stdio.h>
      2 #include <stdlib.h>
      3 #include <string.h>
      4 #include <stdint.h>
      5 
      6 int solve()
      7 {
      8 	int n;
      9 
     10 	scanf("%d", &n);
     11 
     12 	for (int i = 0; i < n; i++) {
     13 		uint64_t a, b;
     14 
     15 		scanf("%llu %llu", &a, &b);
     16 
     17 		if (a == b && a == 0) {
     18 			printf("YES\n");
     19 			continue;
     20 		}
     21 
     22 		printf("%s\n", ((a + b) % 3 == 0 && b / 2 <= a && a <= 2 * b) ? "YES" : "NO");
     23 	}
     24 
     25 	return 0;
     26 }
     27 
     28 int main()
     29 {
     30 	int t = 1;
     31 	while (t--)
     32 		solve();
     33 }