제출 #568828

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
568828	2022-05-26 08:39:57	shahriarkhan	Bigger segments (IZhO19_segments)	C++14	0 / 100	1 ms	308 KiB

segments

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#include<bits/stdc++.h>
using namespace std ;
#define ll long long
const int MX = 5e5 + 5 ;
const pair<ll,ll> emp = {0,0} ;
pair<ll,ll> dp[MX] ;
struct lazytree
{
    vector<pair<ll,ll> > t , lazy ;
    void init(int n)
    {
        t = vector<pair<ll , ll> > (4*n + 4 , emp) ;
        lazy = vector<pair<ll , ll> > (4*n + 4 , emp) ;
    }
    void upd(int node , pair<ll,ll> val)
    {
        t[node] = max(t[node],val) ;
        lazy[node] = max(lazy[node],val) ;
    }
    void shift(int node , int low , int high)
    {
        int mid = (low+high)>>1 , left = node<<1 , right = left|1 ;
        upd(left,lazy[node]) ;
        upd(right,lazy[node]) ;
        lazy[node] = emp ;
 
 
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컴파일 시 표준 에러 (stderr) 메시지

segments.cpp: In member function 'void lazytree::shift(int, int, int)':
segments.cpp:27:13: warning: unused variable 'mid' [-Wunused-variable]
   27 |         int mid = (low+high)>>1 , left = node<<1 , right = left|1 ;
      |             ^~~
segments.cpp: In function 'int main()':
segments.cpp:61:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   61 |     scanf("%d",&n) ;
      |     ~~~~~^~~~~~~~~
segments.cpp:65:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   65 |         scanf("%lld",&a[i]) ;
      |         ~~~~~^~~~~~~~~~~~~~

• Subtask 1: 0 / 13
• Subtask 2: 0 / 14
• Subtask 3: 0 / 10
• Subtask 4: 0 / 36
• Subtask 5: 0 / 27