Submission #1225763

#TimeUsernameProblemLanguageResultExecution timeMemory
1225763_rain_Long Mansion (JOI17_long_mansion)C++20
10 / 100
3098 ms64760 KiB
#include<bits/stdc++.h> using namespace std; typedef long long LL; const int N=(int)5e5; int x[N+2],y[N+2],c[N+2],b[N+2]; vector<int>arr[N+2]; int n,q; namespace subtask3{ int lef[N+2],rig[N+2]; set<int>pos[N+2]; bool inside(int l,int r,int x){ auto it=pos[x].lower_bound(l); if (it==pos[x].end()) return false; return *it<=r; } void main_code(){ for(int i=1;i<=n;++i){ for(auto&x:arr[i]) pos[x].insert(i); } for(int i=1;i<=n;++i){ lef[i]=rig[i]=i; bool nxt=true; while (nxt){ nxt=false; while (lef[i]>1 && inside(lef[i],rig[i],c[lef[i]-1])){ rig[i]=max(rig[i],rig[lef[i]-1]); lef[i]=lef[lef[i]-1]; nxt=true; } while (rig[i]<n && inside(lef[i],rig[i],c[rig[i]])) rig[i]++,nxt=true; } } for(int i=1;i<=q;++i){ bool ok=(lef[x[i]] <= y[i] && y[i]<=rig[x[i]]); cout<<(ok?"YES":"NO")<<'\n'; } } } int main(){ ios::sync_with_stdio(false); cin.tie(0) ; cout.tie(0); #define task "main" if (fopen(task".inp","r")){ freopen(task".inp","r",stdin); freopen(task".out","w",stdout); } cin>>n; for(int i=1;i<n;++i) cin>>c[i]; for(int i=1;i<=n;++i){ cin>>b[i]; arr[i].resize(b[i]); for(auto&x:arr[i]) cin>>x; } cin>>q; for(int i=1;i<=q;++i) cin>>x[i]>>y[i]; return subtask3::main_code(),0; assert(false); return 0; }

Compilation message (stderr)

long_mansion.cpp: In function 'int main()':
long_mansion.cpp:52:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |                 freopen(task".inp","r",stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
long_mansion.cpp:53:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   53 |                 freopen(task".out","w",stdout);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
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