#include "stdio.h"

int main()
{

    /*
     *  modify 24 hour time to 12 hour
     *  take first 2 numbers,
     *  if numbers <=12, AM
     *  else PM
     *  */

    int i ; int j; char c;
    printf("input time: ");
    scanf("%2d%1c%2d", &i,&c, &j);
    printf("int i: %d int j: %d\n", i, j);

    if(i!=12&&j==00){
        i%=12;
    }


    if(i <=12){
        printf("%d:%.2d AM",i,j);
    } else {
        printf("%d:%.2d PM",i,j);
    }

    return 0;
}