LeetCode Daily Problem P1716: Calculate Money in Leetcode Bank

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Timeline

timeline

2025-10-26

init

mathematics

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Problem:

P1716 Calculate Money in Leetcode Bank

https://leetcode.cn/problems/calculate-money-in-leetcode-bank/description/?envType=daily-question&envId=2025-10-26

Very simple math problem

struct Solution;

impl Solution {
    pub fn total_money(n: i32) -> i32 {
        let week = n / 7;
        let day = n % 7;

        // 1,2   (1+2)*2/2

        28 * week + 7 * (week - 1) * week / 2 + (week + 1 + week + day) * day / 2
    }
}

fn main() {
    println!("Hello, world!");
}