Submission #1169587

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1169587	2025-03-19 02:28:06	nathan4690	Curtains (NOI23_curtains)	C++20	100 / 100	757 ms	94508 KiB

curtains

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#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define f1(i,n) for(int i=1;i<=n;i++)
#define __file_name ""
using namespace std;
const ll maxn=1e6+5, inf=1e18;
struct Value{
    int le = 1e9, ri = -1e9;
    Value(int le=1e9, int ri=-1e9): le(le), ri(ri){};
    Value operator+(const Value &rhs) const{
        // Merge two nodes
        Value res;
        if(le == 1e9) res = rhs;
        else if(rhs.le == 1e9) res = *this;
        else if(ri >= rhs.le - 1){
            res.le = min(le, rhs.le);
            res.ri = max(ri, rhs.ri);
        }else res = rhs;
        return res;
    }
};
template<class T>
struct SegmentTree{
    int n;
    vector<T> st;
    SegmentTree(){};
    SegmentTree(int n): n(n), st(4*n+1){};
 
 
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Compilation message (stderr)

curtains.cpp: In function 'int main()':
curtains.cpp:69:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   69 |         freopen(__file_name ".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
curtains.cpp:70:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   70 |         freopen(__file_name ".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 3 / 3
• Subtask 2: 6 / 6
• Subtask 3: 15 / 15
• Subtask 4: 20 / 20
• Subtask 5: 36 / 36
• Subtask 6: 20 / 20