function minimumNumber(n, password) {
    // Return the minimum number of characters to make the password strong
    const NUM = "0123456789";
    const LOW = "abcdefghijklmnopqrstuvwxyz";
    const UPP = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    const SPE = "!@#$%^&*()-+";
    const TYPES = [NUM, LOW, UPP, SPE];
    const MIN_LENGTH = 6;
    let typesIncluded = 0;
    let hasNum = false, hasLow = false, hasUpp = false, hasSpe = false;
    let result = 0;

    for(let item of password){
        if(NUM.indexOf(item) !== -1 && !hasNum){
            hasNum = true;
            typesIncluded++;
            continue;
        }

        if(LOW.indexOf(item) !== -1 && !hasLow){
            hasLow = true;
            typesIncluded++;
            continue;
        }

        if(UPP.indexOf(item) !== -1 && !hasUpp){
            hasUpp = true;
            typesIncluded++;
            continue;
        }

        if(SPE.indexOf(item) !== -1 && !hasSpe){
            hasSpe = true;
            typesIncluded++;
            continue;
        }
    }
    
    result = Math.max(MIN_LENGTH - password.length, TYPES.length - typesIncluded);
    return result;
}