#include "obstacles.h" #include<bits/stdc++.h> using namespace std; #define ff first #define ss second #define pb push_back vector<int>HH,TT; const int N=3e5+5; int st[N]; int N; void build(int node, int L, int R){ if(L==R){ st[node]=HH[L-1]; return; } int mid=(L+R)/2; build(node*2,L,mid); build(node*2+1,mid+1,R); st[node]=max(st[node*2],st[node*2+1]); } int find(int node, int L, int R, int l, int r){ if(l>R or L>r)return 0; if(l<=L and R<=r)return st[node]; int mid=(L+R)/2; return max(find(node*2,L,mid,l,r),find(node*2+1,mid+1,R,l,r)); } void initialize(std::vector<int> T, std::vector<int> H) { TT.clear(); HH.clear(); for(auto a:T)TT.pb(a); for(auto b:H)HH.pb(b); N=T.size(); build(1,1,(int)HH.size()); } bool can_reach(int L, int R, int S, int D) { if(S>D)swap(S,D); int h=find(1,1,N,S+1,D+1); return TT[0]>h; }

obstacles.cpp:10:5: error: conflicting declaration 'int N'
   10 | int N;
      |     ^
obstacles.cpp:8:11: note: previous declaration as 'const int N'
    8 | const int N=3e5+5;
      |           ^
obstacles.cpp: In function 'void initialize(std::vector<int>, std::vector<int>)':
obstacles.cpp:32:6: error: assignment of read-only variable 'N'
   32 |     N=T.size();
      |     ~^~~~~~~~~