Submission #781529

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
781529	2023-07-13 07:41:22	guagua0407	Building Bridges (CEOI17_building)	C++17	100 / 100	52 ms	8268 KiB

building

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//#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int,int>
#define f first
#define s second
#define all(x) x.begin(),x.end()
#define _ ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}
struct line{
    ll a=(ll)1e12,b=(ll)1e18;
    ll val(ll x){
        return a*x+b;
    }
};
const int mxn=1e5+5;
const int mxs=1e6+5;
int n;
ll pre[mxn];
ll h[mxn];
ll w[mxn];
ll dp[mxn];
line segtree[mxs*4];
 
 
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Compilation message (stderr)

building.cpp: In function 'void setIO(std::string)':
building.cpp:12:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
building.cpp:13:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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