#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
char buf[100];
int i,j,n;
fgets(buf
,sizeof buf
,stdin
); if(n>0 && buf[n-1] == '\n')
buf[n-1] = '\0';
for(i=0;i<n;i++)
{
j = i;
while(j--)
}
return 0;
}
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