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  1. #include <bits/stdc++.h>
  2.  
  3. #define ll long long
  4.  
  5. using namespace std;
  6.  
  7. void solve() {
  8.     int n; cin >> n;
  9.     vector <vector<int>> a(n + 5, vector <int> (2));
  10.     vector <vector<string>> s(n + 5, vector <string> (2));
  11.     for (int i = 1; i <= n; ++i) cin >> a[i][1];
  12.     for (int i = 1; i <= n; ++i) {
  13.         cin >> s[i][0];
  14.         s[i][1] = s[i][0];
  15.         reverse(s[i][1].begin(), s[i][1].end());
  16.     }
  17.  
  18.     vector <vector<ll>> dp(n + 5, vector<ll> (2, 9e18));
  19.  
  20.     dp[1][0] = 0;
  21.     dp[1][1] = a[1][1];
  22.     for (int i = 2; i <= n; ++i) {
  23.         for (int j = 0; j <= 1; ++j) {
  24.             for (int k = 0; k <= 1; ++k) {
  25.                 if (s[i - 1][j] <= s[i][k]) {
  26.                     dp[i][k] = min(dp[i][k], dp[i - 1][j] + a[i][k]);
  27.                 }
  28.             }
  29.         }
  30.     }
  31.  
  32.     ll ans = min(dp[n][0], dp[n][1]);
  33.  
  34.     cout << (ans == 9e18 ? -1 : ans);
  35. }
  36.  
  37. int main() {
  38.     ios_base::sync_with_stdio(0);
  39.     cin.tie(0); cout.tie(0);
  40.  
  41.     if (fopen("reverse.inp", "r")) {
  42.         freopen("reverse.inp", "r", stdin);
  43.         freopen("reverse.out", "w", stdout);
  44.     }
  45.  
  46.     solve();
  47.  
  48.     return 0;
  49. }
Success #stdin #stdout 0.01s 5284KB
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https://ideone.com/ho6Z0n
language:
C++14 (clang 8.0)
created:
6 hours ago
visibility:
public

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