Submission #414497

#	Time	Username	Problem	Language	Result	Execution time	Memory
414497		ak2006	Building Bridges (CEOI17_building)	C++14	0 / 100	2 ms	332 KiB

building

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vb = vector<bool>;
using vvb = vector<vb>;
using vi = vector<int>;
using vvi = vector<vi>;
using vl = vector<ll>;
using vvl = vector<vl>;
using vc = vector<char>;
using vvc = vector<vc>;
using vs = vector<string>;
const ll mod = 1e9 + 7,inf = 1e18;
#define pb push_back
#define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
void setIO()
{
    fast;
    #ifndef ONLINE_JUDGE
    freopen("input.txt","r",stdin);
    freopen("outut.txt","w",stdout);
    #endif
}
int main()
{
    setIO();
    int n;
    cin>>n;
    vl h(n + 1),w(n + 1),dp(n + 1);
    ll sum = 0;
    for (int i = 1;i<=n;i++)cin>>h[i];
    for (int i = 1;i<=n;i++){cin>>w[i];sum += w[i];}
    dp[1] = -w[1];
    for (int i = 2;i<=n;i++){
        dp[i] = inf;
        for (int j = i - 1;j>=1;j--){
            dp[i] = min(dp[i],dp[j] + (h[i] - h[j]) * (h[i] - h[j]) - w[i]);//p[i - 1] - p[j]);
        }
    }
    cout<<dp[n] + sum;
    return 0;
}

Compilation message (stderr)

building.cpp: In function 'void setIO()':
building.cpp:20:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |     freopen("input.txt","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
building.cpp:21:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |     freopen("outut.txt","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 30
• Subtask 2: 0 / 30
• Subtask 3: 0 / 40