43 lines
827 B
Rust
43 lines
827 B
Rust
/**
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* [1690] Stone Game VII
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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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pub fn stone_game_vii(stones: Vec<i32>) -> i32 {
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let n = stones.len();
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let mut sum = vec![0; n + 1];
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for (index, value) in stones.iter().enumerate() {
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sum[index + 1] = sum[index] + *value;
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}
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let mut dp = vec![vec![0;n];n];
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for i in (0..=n-2).rev() {
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for j in i+1..n {
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dp[i][j] = (sum[j + 1] - sum[i + 1] - dp[i + 1][j]).max(
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sum[j] - sum[i] - dp[i][j - 1]
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);
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}
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}
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dp[0][n - 1]
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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_1690() {
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assert_eq!(Solution::stone_game_vii(vec![5,3,1,4,2]), 6);
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}
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}
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