#include <stdio.h>
int main() {
char input_str[100];
char output_str[200];
char *in;
char *out;
int n = 5;
int m = 5;
fgets(input_str
, 100 , stdin
);
in = input_str;
out = output_str;
while(*in >= 'A') {
*in = (*in >= 'J') ? (*in - 'A' - 1) : (*in - 'A');
*(out++) = (*in / m) + 'A';
*(out++) = (*in % n) + 'A';
in++;
}
*out = 0;
return 0;
}
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