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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. const long long MaxN = 1e5 + 5, INF = 1e18;
  4. long long n, dp[MaxN], t[MaxN], r[MaxN];
  5. void solve1()
  6. {
  7.     memset(dp,0,sizeof(dp));
  8.     dp[1]=t[1];
  9.     for (long long i=2; i<=n; i++)
  10.     {
  11.         dp[i]=min(dp[i-1]+t[i],dp[i-2]+r[i-1]);
  12.     }
  13.     cout << dp[n];
  14. }
  15. void solve2()
  16. {
  17.     for(long long i = 0; i <= n; i++)
  18.     {
  19.         dp[i] = INF;
  20.     }
  21.  
  22.     dp[0] = 0;
  23.  
  24.     for(long long i = 0; i < n; i++)
  25.     {
  26.         dp[i + 1] = min(dp[i + 1], dp[i] + t[i + 1]);
  27.  
  28.         if(i + 2 <= n)
  29.         {
  30.             dp[i + 2] = min(dp[i + 2], dp[i] + r[i + 1]);
  31.         }
  32.     }
  33.  
  34.     cout << dp[n];
  35. }
  36. int main()
  37. {
  38.     ios_base::sync_with_stdio(0);
  39.     cin.tie(0);
  40.     cin >> n;
  41.     for (long long i=1; i<=n; i++)
  42.     {
  43.         cin >> t[i];
  44.     }
  45.     for (long long i=1; i<=n-1; i++)
  46.     {
  47.         cin >> r[i];
  48.     }
  49.     solve2();
  50.  
  51. }
Success #stdin #stdout 0s 5600KB
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https://ideone.com/KhmFnb
language:
C++14 (gcc 8.3)
created:
14 hours ago
visibility:
public

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