TASK

Problem

#97

Given balance, operation `deposit`/`withdraw`, and amount. Deposit adds funds; withdrawal requires amount≤balance. Print new balance or `INSUFFICIENT FUNDS`.

EXAMPLE

Example

Input

1000 withdraw 300

Output

700

LIMITS

Constraints

All numeric input values fit in JavaScript `Number`.

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LEARN Theory for this problem

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### Bank Terminal

JavaScript arithmetic works with numeric values stored in variables. A clear solution reads the needed values, computes the formula with `+`, `-`, `*`, `/` or `**`, and prints only the final result.

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NEED HELP? Hints

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['Write the formula using named intermediate values if it contains more than one operation.', 'After each iteration, it should be clear what has already been accumulated and what remains to be processed.']

✓

ANSWER Solution

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const fs = require('fs');
const input = fs.readFileSync(0, 'utf8').trimEnd();
let [b, op, a] = input.trim().split(/\s+/).filter(Boolean);
b = Number(b);
a = Number(a);
if ((op) === ("deposit")) {
    console.log(b + a);
} else {
    if (a <= b) {
        console.log(b - a);
    } else {
        console.log("INSUFFICIENT FUNDS");
    }
}