76 lines
1.9 KiB
Rust
76 lines
1.9 KiB
Rust
/**
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* [2861] Maximum Number of Alloys
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*/
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pub struct Solution {}
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// submission codes start here
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impl Solution {
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fn check(n: usize, count: i32, budget: i32, composition: &Vec<i32>, stock: &Vec<i32>, cost: &Vec<i32>) -> bool {
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let mut need = 0i64;
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for i in 0..n {
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let number = composition[i] * count - stock[i];
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if number > 0 {
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need += number as i64 * cost[i] as i64;
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}
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}
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need <= budget as i64
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}
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pub fn max_number_of_alloys(n: i32, k: i32, budget: i32,
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composition: Vec<Vec<i32>>, stock: Vec<i32>, cost: Vec<i32>) -> i32 {
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let mut result = 0;
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let (n, k) = (n as usize, k as usize);
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for m in 0..k {
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let mut left = 0;
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let mut right = vec![0;n];
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for i in 0..n {
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right[i] = (stock[i] + budget / cost[i]) / composition[m][i];
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}
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let mut right = *right.iter().max().unwrap();
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while left < right {
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let mid = (left + right) / 2;
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if Solution::check(n, mid, budget, &composition[m], &stock, &cost) {
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left = mid + 1;
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} else {
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right = mid;
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}
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dbg!(left, right);
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}
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if !Solution::check(n, left, budget, &composition[m], &stock, &cost) {
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left = left - 1;
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}
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result = result.max(left);
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}
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result
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}
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}
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// submission codes end
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_2861() {
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assert_eq!(Solution::max_number_of_alloys(3,2,15,
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vec![vec![1,1,1], vec![1,1,10]],
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vec![0,0,0],
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vec![1,2,3]),
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2);
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}
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}
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