#include <stdio.h>
int main(void) {
// your code goes here
int n,i;
for(i=1;i<=n;i++)
{
}
for(i=1;i<=n;i++)
{
}
for(i=1;i<=n;i++)
{
}
for(i=1;i<=n;i++)
{
}
return 0;
}
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