func_code_string: #include <bits/stdc++.h>   using namespace std;   const int N = 600050;   long long a[N], dp[N][3];   int main() {     int n, x;     scanf( %d%d , &n, &x);     for (int i = 1; i <= n; i++) {       scanf( %lld , &a[i]);     }     long long ans = 0;     for (int i = 1; i <= n; i++) {       dp[i][0] = max(dp[i][0], max(dp[i - 1][0], 0ll) + a[i]);       dp[i][1] = max(dp[i][1], max(dp[i - 1][0], 0ll) + a[i] * x);       dp[i][1] = max(dp[i][1], dp[i - 1][1] + a[i] * x);       dp[i][2] = max(dp[i][2], max(dp[i - 1][1], dp[i - 1][2]) + a[i]);       ans = max(max(ans, dp[i][0]), max(dp[i][1], dp[i][2]));     }     printf( %lld n , ans);   }   