import ballerina/io;

function divmod(int a, int b) returns [int, int] {
    return [a / b, a % b];
}

function pow(int n, int e) returns int {
    if e < 1 { return 1; }
    int prod = 1;
    foreach int i in 1...e { prod *= n; }
    return prod;
}

public function main() returns error? {
    int a = check int:fromString(io:readln("first number:     "));
    int b = check int:fromString(io:readln("second number:    "));
    io:println("sum:              ", a + b);
    io:println("difference:       ", a - b);
    io:println("product:          ", a * b);
    io:println("integer quotient: ", a / b);  // rounds towards zero
    io:println("remainder:        ", a % b);  // sign matches sign of first operand
    io:println("exponentiation:   ", pow(a, b));
    io:println("divmod            ", divmod(a, b));
}