- #include <cstdio> 
- using namespace std; 
-   
- inline int gcd(int a, int b){ 
-     while(b) b ^= a ^= b ^= a %= b; 
-     return a; 
- } 
-   
- int main() 
- { 
-     int a, b, c; 
-     scanf("%d %d", &a, &b); 
-     c = (a + b)/gcd(a, b); 
-     printf("%d\n", (a == b || c == (c & (-c)))); 
-     return 0; 
- } 
-   
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