Submission #10405807

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Source Code Expand

//https://atcoder.jp/contests/dp/tasks/dp_a
//29-02-2020
#include <bits/stdc++.h>
using namespace std;
 
int main(){
  ios::sync_with_stdio(false);
  cin.tie(0);
  #ifndef ONLINE_JUDGE
  freopen ("input.txt", "r", stdin);
  freopen ("output.txt", "w", stdout);
  #endif 
  int n;  cin >> n;
  vector <int> h(n), dp(n, 0);
  for (int i = 0; i < n; ++i) {
    cin >> h[i];
  } 
  dp[0] = 0;
  dp[1] = abs (h[1] - h[0]);
  for (int i = 2; i < n; ++i) {
    dp[i] = min (dp[i - 1] + abs (h[i] - h[i - 1]), dp[i - 2] + abs (h[i] - h[i - 2]));
  }
  cout << dp[n - 1] << '\n';
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:10:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]
   freopen ("input.txt", "r", stdin);
                                    ^
./Main.cpp:11:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]
   freopen ("output.txt", "w", stdout);
                                      ^

Judge Result