oj.uz

Submission #100296

# Submission time Handle Problem Language Result Execution time Memory
100296 2019-03-10T09:55:40 Z mraron Konj (COCI19_konj) C++14
70 / 70
 109 ms 15736 KB 
#include<iostream>
#include<vector>
#include<map>
#include<set>
#include<cassert>
#include<cassert>
#include<unordered_map>
#include<unordered_set>
#include<functional>
#include<queue>
#include<stack>
#include<cstring>
#include<algorithm>
#include<cmath>
#include<sstream>
#include<iomanip>
#include<cstdio>
#include<cstdlib>
#include<numeric>
using namespace std;

#define all(x) (x).begin(), (x).end()
#define pb push_back
#define xx first
#define yy second
#define sz(x) (int)(x).size()
#define gc getchar
#define IO ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0)
#define mp make_pair

#ifndef ONLINE_JUDGE
#  define LOG(x) (cerr << #x << " = " << (x) << endl)
#else
#  define LOG(x) ((void)0)
#endif

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;

const double PI=3.1415926535897932384626433832795;
const ll INF = 1LL<<62;
const ll MINF = -1LL<<62;

template<typename T> T getint() {
	T val=0;
	char c;
	
	bool neg=false;
	while((c=gc()) && !(c>='0' && c<='9')) {
		neg|=c=='-';
	}

	do {
		val=(val*10)+c-'0';
	} while((c=gc()) && (c>='0' && c<='9'));

	return val*(neg?-1:1);
}

struct pt {
	int xx,yy;
};

struct seg {
	pt a,b;
};

const int M=312;
int Ok[M][M];
int Volt[M][M];
vector<pt> adj[M][M];
int ans[M][M];
int cntx[M];
int cnty[M];

void draw(pt A, pt B) {
	ans[min(A.yy,B.yy)][min(A.xx,B.xx)]++;
	ans[min(A.yy,B.yy)][max(A.xx,B.xx)+1]--;
	ans[max(A.yy,B.yy)+1][max(A.xx,B.xx)+1]++;
	ans[max(A.yy,B.yy)+1][min(A.xx,B.xx)]--;
	/*for(int i=min(A.xx, B.xx);i<=max(A.xx,B.xx);++i) {
		for(int j=min(A.yy, B.yy);j<=max(A.yy,B.yy);++j) {
			ans[j][i]=1;
		}
	}*/
}

void flush() {
	for(int i=0;i<M;++i) {
		for(int j=0;j<M;++j) {
			if(i>0) ans[i][j]+=ans[i-1][j];
			if(j>0) ans[i][j]+=ans[i][j-1];
			if(i>0 && j>0) ans[i][j]-=ans[i-1][j-1];
		}
	}
}

void dfs(pt akt) {
	Volt[akt.xx][akt.yy]=1;
	for(auto i:adj[akt.xx][akt.yy]) {
		draw(akt,i);
		if(!Volt[i.xx][i.yy]) {
			dfs({i.xx,i.yy});
		}
	}
	Volt[akt.xx][akt.yy]=2;
}

int main() {
	IO;
	int n;
	cin>>n;
	vector<seg> t(n);
	for(int i=0;i<n;++i) {
		cin>>t[i].a.xx>>t[i].a.yy;
		cin>>t[i].b.xx>>t[i].b.yy;
	}
	pt T;
	cin>>T.xx>>T.yy;
	for(int i=0;i<n;++i) {
		if(t[i].a.xx==t[i].b.xx && T.xx==t[i].a.xx && min(t[i].a.yy, t[i].b.yy)<=T.yy && T.yy<=max(t[i].a.yy, t[i].b.yy)) {
			Ok[t[i].a.xx][t[i].a.yy]=1;
			Ok[t[i].b.xx][t[i].b.yy]=1;
		}
		
		if(t[i].a.yy==t[i].b.yy && T.yy==t[i].a.yy && min(t[i].a.xx, t[i].b.xx)<=T.xx && T.xx<=max(t[i].a.xx, t[i].b.xx)) {
			Ok[t[i].a.xx][t[i].a.yy]=1;
			Ok[t[i].b.xx][t[i].b.yy]=1;
		}
	}
	
	for(int i=0;i<n;++i) {
		adj[t[i].a.xx][t[i].a.yy].push_back(t[i].b);
		adj[t[i].b.xx][t[i].b.yy].push_back(t[i].a);
	}
	
	for(int i=0;i<M;++i) {
		for(int j=0;j<M;++j) {
			if(Ok[i][j] && !Volt[i][j]) {	
				dfs(pt{i,j});
			}
		}
	}
	
	flush();
	
	for(int i=0;i<M;++i) {
		for(int j=0;j<M;++j) {
			cntx[i]+=ans[i][j];
			cnty[j]+=ans[i][j];
		}
	}
	
	int Lx, Rx, Ly, Ry;
	for(Lx=0;Lx<M;++Lx) {if(cntx[Lx]>0) break ;}
	for(Rx=M-1;Rx>=0;Rx--) {if(cntx[Rx]>0) break ;}
	for(Ly=0;Ly<M;++Ly) {if(cnty[Ly]>0) break ;}
	for(Ry=M-1;Ry>=0;Ry--) {if(cnty[Ry]>0) break ;}
	
	for(int i=Rx;i>=Lx;--i) {
		if(cntx[i]==0) continue ;
		for(int j=Ly;j<=Ry;++j) {
			if(cnty[j]==0) continue ;
			cout<<(ans[i][j]?"#":".");
		}cout<<"\n";
	}
	return 0;
}

Subtask #1
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3072 KB Output is correct
2 Correct 5 ms 3072 KB Output is correct
3 Correct 109 ms 15736 KB Output is correct
4 Correct 4 ms 3072 KB Output is correct
5 Correct 5 ms 3072 KB Output is correct
6 Correct 5 ms 3072 KB Output is correct
7 Correct 6 ms 3148 KB Output is correct
8 Correct 4 ms 3072 KB Output is correct
9 Correct 6 ms 3072 KB Output is correct
10 Correct 5 ms 3072 KB Output is correct