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- #include <stdio.h>
- #include <math.h>
- int log(int i)
- {
- int lg=0;
- while(i%2==0) {
- i/=2;
- lg++;
- }
- return lg;
- }
- int main(void)
- {
- int k;
- scanf("%d",&k);
- if(pow(2,log(k))==k)
- printf("1");
- else printf("0");
- printf("\n");
- return 0;
- }
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