oj.uz

답안 #1015000

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1015000 2024-07-05T22:44:19 Z jamjanek Golf (JOI17_golf) C++14
10 / 100
 39 ms 1008 KB 
#include<bits/stdc++.h>
using namespace std;
map<int,int>mapx, mapy;
struct rect{int a, b, c, d; int id;};
vector<rect>pros;
bool cmp1(rect a, rect b){
	return a.a < b.a;
}
 
bool cmp2(rect a, rect b){
	return a.c < b.c;
}
bool cmp3(rect a, rect b){
	return a.b > b.b;
}
bool cmp4(rect a, rect b){
	return a.d > b.d;
}
struct oX{int x, p, k, id, dist;};
struct oY{int y, p, k, id, dist;};
oX oXs[400010];
oY oYs[400010];
bool przecina(int x, int y){
	if(oXs[x].p<=oYs[y].y && oXs[x].k>=oYs[y].y && oYs[y].p<=oXs[x].x && oYs[y].k>=oXs[x].x)
		return 1;
	return 0;
}
const int base = 1<<10;
int tree[2*base];
void ustaw(int w, int l, int p, int a, int b, int val){
	if(l>b || p<a)return;
	if(a<=l && p<=b){
		tree[w] = val;
		return;
	}
	if(tree[w]!=-1)
		tree[w*2] = tree[w*2+1] = tree[w];
	tree[w] = -1;
	ustaw(w*2, l, (l+p)/2, a, b, val);
	ustaw(w*2+1, (l+p)/2+1, p, a, b, val);
}
int value(int w){
	int ans = -1;
	w+=base;
	while(w>0){
		if(tree[w]!=-1)
			ans = tree[w];
		w/=2;
	}
	return ans;
}
int main()
{
	int sx, sy, tx, ty, n, i;
	scanf("%d%d%d%d%d", &sx, &sy, &tx, &ty, &n);
	for(i=0;i<n;i++){
		pros.push_back({});
		scanf("%d%d%d%d", &pros.back().a, &pros.back().b, &pros.back().c, &pros.back().d);
	}
	pros.push_back({sx, sx, sy, sy});//start ma id n
	pros.push_back({tx, tx, ty, ty});//koniec ma id n+1
	for(i=0;i<n+2;i++){
		pros[i].id = i;
		oXs[i*4+0].x = pros[i].a;
		oYs[i*4+1].y = pros[i].c;
		oXs[i*4+2].x = pros[i].b;
		oYs[i*4+3].y = pros[i].d;
	}
	sort(pros.begin(), pros.end(), cmp1);
	ustaw(1, 0, base-1, 0, 1001, 0);
	for(auto &ij: pros){
		oYs[ij.id*4+1].p = value(ij.c);
		oYs[ij.id*4+3].p = value(ij.d);
		ustaw(1, 0, base-1, ij.c+1, ij.d-1, ij.b);
	}
	sort(pros.begin(), pros.end(), cmp2);
	ustaw(1, 0, base-1, 0, 1001, 0);
	for(auto &ij: pros){
		oXs[ij.id*4+0].p = value(ij.a);
		oXs[ij.id*4+2].p = value(ij.b);
		ustaw(1, 0, base-1, ij.a+1, ij.b-1, ij.d);
	}
	sort(pros.begin(), pros.end(), cmp3);
	ustaw(1, 0, base-1, 0, 1001, 1001);
	for(auto &ij: pros){
		oYs[ij.id*4+1].k = value(ij.c);
		oYs[ij.id*4+3].k = value(ij.d);
		ustaw(1, 0, base-1, ij.c+1, ij.d-1, ij.a);
	}
	sort(pros.begin(), pros.end(), cmp4);
	ustaw(1, 0, base-1, 0, 1001, 1001);
	for(auto &ij: pros){
		oXs[ij.id*4+0].k = value(ij.a);
		oXs[ij.id*4+2].k = value(ij.b);
		ustaw(1, 0, base-1, ij.a+1, ij.b-1, ij.c);
	}
	
	if(sx==tx){
		if(oXs[n*4+0].p<=ty && oXs[n*4+0].k>=ty){
			printf("1\n");return 0;
		}
	}
	
	if(sy==ty){
		if(oYs[n*4+1].p<=tx && oYs[n*4+1].k>=tx){
			printf("1\n");return 0;
		}
	}
	queue<int>kolejka;
	oXs[n*4+0].dist = 1;
	oXs[n*4+2].dist = 1;
	oYs[n*4+1].dist = 1;
	oYs[n*4+3].dist = 1;
	kolejka.push(n*4+0);
	kolejka.push(n*4+1);
	kolejka.push(n*4+2);
	kolejka.push(n*4+3);
	while(kolejka.size()){
		auto ij = kolejka.front();
		kolejka.pop();
		if(ij%2==0){
			for(i=1;i<(n+1)*4+4;i+=2){
				if(przecina(ij, i) && oYs[i].dist==0){
					oYs[i].dist = oXs[ij].dist+1;
					kolejka.push(i);
				}
			}
		}
		else{
			for(i=0;i<(n+1)*4+4;i+=2){
				if(przecina(i, ij) && oXs[i].dist==0){
					oXs[i].dist = oYs[ij].dist+1;
					kolejka.push(i);
				}
			}			
		}
	}
	printf("%d\n", min({oXs[(n+1)*4+0].dist, oXs[(n+1)*4+2].dist, oYs[(n+1)*4+1].dist, oYs[(n+1)*4+3].dist}));
	/*
	printf("X:\n");
	for(i=0;i<=(n+1);i++){
		printf("%d %d %d %d %d\n", oXs[i*4+0].x, oXs[i*4+0].p, oXs[i*4+0].k, oXs[i*4+0].id, oXs[i*4+0].dist);
		printf("%d %d %d %d %d\n", oXs[i*4+2].x, oXs[i*4+2].p, oXs[i*4+2].k, oXs[i*4+2].id, oXs[i*4+2].dist);
	}
	printf("Y:\n");
	for(i=0;i<=(n+1);i++){
		printf("%d %d %d %d %d\n", oYs[i*4+1].y, oYs[i*4+1].p, oYs[i*4+1].k, oYs[i*4+1].id, oYs[i*4+1].dist);
		printf("%d %d %d %d %d\n", oYs[i*4+3].y, oYs[i*4+3].p, oYs[i*4+3].k, oYs[i*4+3].id, oYs[i*4+3].dist);
	}*/
}

Compilation message

golf.cpp: In function 'int main()':
golf.cpp:55:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   55 |  scanf("%d%d%d%d%d", &sx, &sy, &tx, &ty, &n);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
golf.cpp:58:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   58 |   scanf("%d%d%d%d", &pros.back().a, &pros.back().b, &pros.back().c, &pros.back().d);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 31 ms 664 KB Output is correct
6 Correct 32 ms 668 KB Output is correct
7 Correct 37 ms 460 KB Output is correct
8 Correct 39 ms 604 KB Output is correct
9 Correct 31 ms 604 KB Output is correct
10 Correct 30 ms 600 KB Output is correct
11 Correct 36 ms 604 KB Output is correct
12 Correct 29 ms 600 KB Output is correct
13 Correct 30 ms 604 KB Output is correct
14 Correct 31 ms 604 KB Output is correct
15 Correct 4 ms 348 KB Output is correct
16 Correct 17 ms 600 KB Output is correct

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 31 ms 664 KB Output is correct
6 Correct 32 ms 668 KB Output is correct
7 Correct 37 ms 460 KB Output is correct
8 Correct 39 ms 604 KB Output is correct
9 Correct 31 ms 604 KB Output is correct
10 Correct 30 ms 600 KB Output is correct
11 Correct 36 ms 604 KB Output is correct
12 Correct 29 ms 600 KB Output is correct
13 Correct 30 ms 604 KB Output is correct
14 Correct 31 ms 604 KB Output is correct
15 Correct 4 ms 348 KB Output is correct
16 Correct 17 ms 600 KB Output is correct
17 Runtime error 1 ms 1008 KB Execution killed with signal 11
18 Halted 0 ms 0 KB -

Subtask #3
0 / 70.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 31 ms 664 KB Output is correct
6 Correct 32 ms 668 KB Output is correct
7 Correct 37 ms 460 KB Output is correct
8 Correct 39 ms 604 KB Output is correct
9 Correct 31 ms 604 KB Output is correct
10 Correct 30 ms 600 KB Output is correct
11 Correct 36 ms 604 KB Output is correct
12 Correct 29 ms 600 KB Output is correct
13 Correct 30 ms 604 KB Output is correct
14 Correct 31 ms 604 KB Output is correct
15 Correct 4 ms 348 KB Output is correct
16 Correct 17 ms 600 KB Output is correct
17 Runtime error 1 ms 1008 KB Execution killed with signal 11
18 Halted 0 ms 0 KB -