#include <stdio.h>
int main(void){
int i, limit = 100, k = 0, divisor = 4;
for (i = 0; i <= limit; i++) {
if(i % divisor == 0)
++k;
if(k % 2)
}
for (i = 0, k = 1; i <= limit; i++) {
if(i % divisor == 0)
++k;
if(k % 2)
}
}
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