#include <stdio.h>
int main()
{
int i = 1024;
for (; i; i >>= 1)
return 0;
}
/*
1024 512 256 128 64 32 16 8 4 2 1
0 0 0 0 0 0 0 0 0 0 0
times = 11
i = i >> 1 = 1024 >> 1 = 512
i = 0
*/
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