C
c
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#include <stdio.h>
int main() {
int hh, mm;
char dn;
scanf("%d:%d %c", &hh, &mm, &dn);
if ((dn == 'P' || dn == 'p') && hh != 12)
{
hh += 12;
}
else if ((dn == 'A' || dn == 'a') && hh == 12)
{
hh == 0;
}
printf("%02d:%02d", hh, mm);
return 0;
}
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