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diff --git a/introductory_problems/coin_piles.cpp b/introductory_problems/coin_piles.cpp
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+// 1754. Coin Piles
+#include <bits/stdc++.h>
+using namespace std;
+
+int main() {
+ static int t, a, b;
+ scanf("%d", &t);
+ for (int i = 0; i < t; i++) {
+ scanf("%d %d", &a, &b);
+ printf((((a + b) % 3) != 0 || a > 2 * b || b > 2 * a) ? "NO\n" : "YES\n");
+ }
+}