제출 #1139108

#제출 시각아이디문제언어결과실행 시간메모리
1139108Noproblem29Golf (JOI17_golf)C++20
0 / 100
10098 ms198452 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];
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;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;
        }
    }
    dp[s.first][s.second]=0;
    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();
        for(int j=x.second;j<=n*4+2;j++){
            if(ad[x.first][j])break;
            if(dp[x.first][j]==-1){
                dp[x.first][j]=dp[x.first][x.second]+1;
                q.push({x.first,j});
            }
        }

        for(int j=x.second;j>=1;j--){
            if(ad[x.first][j])break;
            if(dp[x.first][j]==-1){
                dp[x.first][j]=dp[x.first][x.second]+1;
                q.push({x.first,j});
            }
        }

        for(int j=x.first;j<=n*4+2;j++){
            if(ad[j][x.second])break;
            if(dp[j][x.second]==-1){
                dp[j][x.second]=dp[x.first][x.second]+1;
                q.push({j,x.second});
            }
        }

        for(int j=x.first;j>=1;j--){
            if(ad[j][x.second])break;
            if(dp[j][x.second]==-1){
                dp[j][x.second]=dp[x.first][x.second]+1;
                q.push({j,x.second});
            }
        }
    }
    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();
    }
}
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