Submission #1139160

#TimeUsernameProblemLanguageResultExecution timeMemory
1139160Noproblem29Golf (JOI17_golf)C++20
0 / 100
4268 ms1114112 KiB
#include<bits/stdc++.h> using namespace std; #ifndef BADGNU #pragma GCC target("sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native") #endif #pragma GCC optimize("Ofast,unroll-loops,fast-math,O3") #include <ext/pb_ds/assoc_container.hpp> #include <ext/pb_ds/tree_policy.hpp> using namespace __gnu_pbds; #define ll long long // #define int ll #define ld long double #define y1 cheza mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()); template<class T> using ordered_set = tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>; template<class T> using ordered_multiset = tree<T,null_type,less_equal<T>,rb_tree_tag,tree_order_statistics_node_update>; const int N=4100; const int M=5001; const int B=447; const int mod=998244353; const ll INF=1e18; const int dx[]={1,-1,0,0}; const int dy[]={0,0,1,-1}; const double eps=1e-6; pair<int,int>s,t; int n; int dp[N][N]; int ad[N][N]; set<int>px[N],py[N]; int calc(int x1,int y1,int x2,int y2){ if(x1>x2)swap(x1,x2); if(y1>y2)swap(y1,y2); return ad[x2][y2]-ad[x1-1][y2]-ad[x2][y1-1]+ad[x1-1][y1-1]; } void test(){ cin>>s.first>>s.second>>t.first>>t.second; cin>>n; vector<tuple<int,int,int,int>>v; for(int i=1,lx,rx,ly,ry;i<=n;i++){ cin>>lx>>rx>>ly>>ry; v.push_back({lx,rx,ly,ry}); } { map<ld,int>memx,memy; int tin=0; memx[s.first]=1; memx[t.first]=1; memy[s.second]=1; memy[t.second]=1; for(auto [lx,rx,ly,ry]:v){ memx[lx]=1; memx[rx]=1; memy[ry]=1; memy[ly]=1; memx[lx+0.5]=1; memx[rx-0.5]=1; memy[ry-0.5]=1; memy[ly+0.5]=1; } tin=0; for(auto &i:memx){ i.second=++tin; } tin=0; for(auto &i:memy){ i.second=++tin; } s.first=memx[s.first]; s.second=memy[s.second]; t.first=memx[t.first]; t.second=memy[t.second]; for(auto &[lx,rx,ly,ry]:v){ lx=memx[lx+0.5]; rx=memx[rx-0.5]; ly=memy[ly+0.5]; ry=memy[ry-0.5]; } } // cout<<s.first<<' '<<s.second<<' '<<t.first<<' '<<t.second<<'\n'; for(auto [lx,rx,ly,ry]:v){ // cout<<lx<<' '<<rx<<' '<<ly<<' '<<ry<<'\n'; ad[lx][ly]++; ad[lx][ry+1]--; ad[rx+1][ly]--; ad[rx+1][ry+1]++; } for(int i=1;i<=n*4+2;i++){ for(int j=1;j<=n*4+2;j++){ ad[i][j]+=(ad[i-1][j]+ad[i][j-1]-ad[i-1][j-1]); } } for(int i=1;i<=n*4+2;i++){ for(int j=1;j<=n*4+2;j++){ ad[i][j]+=(ad[i-1][j]+ad[i][j-1]-ad[i-1][j-1]); } } for(int i=1;i<=n*4+2;i++){ for(int j=1;j<=n*4+2;j++){ dp[i][j]=-1; if(calc(i,j,i,j)==0){ px[i].insert(j); py[j].insert(i); } // cout<<calc(i,j,i,j)<<' '; } // cout<<'\n'; } dp[s.first][s.second]=0; px[s.first].erase(s.second); py[s.second].erase(s.first); queue<pair<int,int>>q; q.push(s); // cout<<s.first<<' '<<s.second<<' '<<t.first<<' '<<t.second<<'\n'; while(q.size()){ auto x=q.front(); q.pop(); if(px[x.first].size()>0){ auto it=px[x.first].lower_bound(x.second); while(it!=px[x.first].end()){ if(calc(x.first,x.second,x.first,*it)!=0)break; if(dp[x.first][*it]==-1){ dp[x.first][*it]=dp[x.first][x.second]+1; q.push({x.first,*it}); py[*it].erase(x.first); it=px[x.first].erase(it); } } } if(px[x.first].size()>0){ auto it=px[x.first].lower_bound(x.second); it--; while(it!=px[x.first].end()){ if(calc(x.first,*it,x.first,x.second)!=0)break; if(dp[x.first][*it]==-1){ dp[x.first][*it]=dp[x.first][x.second]+1; q.push({x.first,*it}); py[*it].erase(x.first); it=px[x.first].erase(it); if(it==px[x.first].begin()){ break; } it--; } } } if(py[x.second].size()>0){ auto it=py[x.second].lower_bound(x.first); while(it!=py[x.second].end()){ if(calc(x.first,x.second,*it,x.second)!=0)break; if(dp[*it][x.second]==-1){ dp[*it][x.second]=dp[x.first][x.second]+1; q.push({*it,x.second}); px[*it].erase(x.second); it=py[x.second].erase(it); } } } if(py[x.second].size()>0){ auto it=py[x.second].lower_bound(x.first); it--; while(it!=py[x.second].end()){ if(calc(x.first,x.second,*it,x.second)!=0)break; if(dp[*it][x.second]==-1){ dp[*it][x.second]=dp[x.first][x.second]+1; q.push({*it,x.second}); px[*it].erase(x.second); it=py[x.second].erase(it); if(it==py[x.second].begin()){ break; } it--; } } } } cout<<dp[t.first][t.second]<<'\n'; } /* */ signed main(){ ios_base::sync_with_stdio(false); cin.tie(nullptr); // cout.tie(nullptr); int t2=1; // cin>>t2; for(int i=1;i<=t2;i++){ test(); } }
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...