include <stdio.h>
int main (void) {
FILE *in, *out;
int t;
in = fopen("in.txt", "r");
out = fopen("out.txt", "w");
for(int i=0; i<469; i++){
fscanf(in, "%d", &t);
printf(out,"C_5 %t \n",t)
}
return 0;
}