if s[8::] == str("PM") and s[0:2:] != str("12"):
    t = str(int(s[0:2:]) + 12)
    o = s.replace(s[0:2:],t)       
    
    return o[0:8:]

elif s[8::] == str("PM") and s[0:2:] == str("12"):
    return s[0:8:]

if s[8::] == str("AM") and s[0:2:] == str("12"):
    t = str("00")
    o = s.replace(s[0:2:],t)
    return o[0:8:]

elif s[8::] == str("AM") and s[0:2:] != str("12"):
    return s[0:8:]

function timeConversion(s) {
    let timeArr = s.split(':')
    let hour = Number(timeArr[0])
    let miliTime = s

    if (s[s.length - 2] === 'P' && hour !== 12) {
        hour += 12
        miliTime = `${hour}:${timeArr[1]}:${timeArr[2]}`

    } else if (s[s.length - 2] === 'A' && hour === 12) {
        miliTime = `00:${timeArr[1]}:${timeArr[2]}`
    }

    return miliTime.slice(0, s.length - 2)
}

function timeConversion(s) {
    //for PM
    if(s[8] === "P"){
     if(s.slice[0,2]== "12"){
         return(s.slice[0,8]);
     }else{
         let new_hour = String(Number(s.slice[0,2]) + 12);
         return(new_hour + s.slice[2,8]);
     }    
    }
    //for AM
    else if(s[8] === "A"){
        if(s.slice[0,2]== "12"){
            let new_hour = String(Number(s.slice[0,2]) - 12);
          return(new_hour + s.slice[2,8]);
        }else{
            return(s.slice[0,8]);
        }
    }
}