Submission #1079960

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1079960	2024-08-29 05:03:17	nathan4690	Road Construction (JOI21_road_construction)	C++17	65 / 100	10024 ms	41016 KiB

road_construction

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// The 20th Japanese Olympiad in Informatics (JOI 2020/2021)
// Spring Training Camp/Qualifying Trial
// March 20–23, 2021 (Komaba, Tokyo)
// Contest Day 2 – Road Construction
// JOI21_road_construction
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ll long long
#define pll pair<ll,ll>
#define ld long double
#define el cout << '\n'
#define f1(i,n) for(ll i=1;i<=n;i++)
#define __file_name ""
#define ordered_set tree<pll, null_type, less<pll>, rb_tree_tag, tree_order_statistics_node_update>
using namespace std;
const ll maxn = 1e6+5, inf=1e18;
struct Segment{
    ll a, b1, b2, sgn, idx;
    Segment(){}
    Segment(ll a, ll b1, ll b2, ll sgn, ll idx): a(a), b1(b1), b2(b2), sgn(sgn), idx(idx){}
    bool operator<(const Segment &rhs) const{
        return a < rhs.a;
    }
};
 
 
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Compilation message (stderr)

road_construction.cpp: In function 'int main()':
road_construction.cpp:125:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  125 |         freopen(__file_name ".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
road_construction.cpp:126:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  126 |         freopen(__file_name ".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 6 / 6
• Subtask 3: 7 / 7
• Subtask 4: 20 / 20
• Subtask 5: 27 / 27
• Subtask 6: 0 / 35