oj.uz

답안 #122756

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
122756 2019-06-29T08:43:26 Z 임유진(#2862) Golf (JOI17_golf) C++14
30 / 100
 56 ms 1024 KB 
#include<stdio.h>
#include<vector>
#include<queue>

using namespace std;

#define MAXN 1005

typedef pair<int, bool> pib;

const int INF=1e9+5;
int S, T, U, V, N;
int A[MAXN], B[MAXN], C[MAXN], D[MAXN];
int x1[2*MAXN], x2[2*MAXN], y[2*MAXN], x[2*MAXN], y1[2*MAXN], y2[2*MAXN];

void hor(int idx, int x) {
	x1[idx] = 0;
	x2[idx] = INF;
	for(int i = 0; i < N; i++) if(C[i] < y[idx] && y[idx] < D[i]) {
		if(B[i] <= x) x1[idx] = max(x1[idx], B[i]);
		else x2[idx] = min(x2[idx], A[i]);
	}
}

void ver(int idx, int y) {
	y1[idx] = 0;
	y2[idx] = INF;
	for(int i = 0; i < N; i++) if(A[i] < x[idx] && x[idx] < B[i]) {
		if(D[i] <= y) y1[idx] = max(y1[idx], D[i]);
		else y2[idx] = min(y2[idx], C[i]);
	}
}

int main(){
	vector<int> e[4*MAXN];
	queue<int> q;
	int dp[4*MAXN];

	//freopen("input.txt", "r", stdin);

	scanf("%d%d%d%d%d", &S, &T, &U, &V, &N);
	for(int i=0; i<N; i++) scanf("%d%d%d%d", A+i, B+i, C+i, D+i);

	for(int i=0; i<N; i++) {
		y[i*2] = C[i];
		hor(i*2, A[i]);
		y[i*2+1] = D[i];
		hor(i*2+1, A[i]);
		x[i*2] = A[i];
		ver(i*2, C[i]);
		x[i*2+1] = B[i];
		ver(i*2+1, C[i]);
	}
	y[N*2] = T;
	hor(N*2, S);
	x[N*2] = S;
	ver(N*2, T);
	y[N*2+1] = V;
	hor(N*2+1, U);
	x[N*2+1] = U;
	ver(N*2+1, V);

	if(S == U && y1[2*N] <= V && V <= y2[2*N+1]) {
		printf("1");
		return 0;
	}
	if(T == V && x1[2*N] <= U && U <= x2[2*N+1]) {
		printf("1");
		return 0;
	}

	for(int i = 0; i < 2*N+2; i++) for(int j = 0; j < 2*N+2; j++) 
		if(x1[i] <= x[j] && x[j] <= x2[i] && y1[j] <= y[i] && y[i] <= y2[j]) {
			e[i].push_back(2*N+2+j);
			e[2*N+2+j].push_back(i);
		}

	dp[2*N] = dp[4*N+2] = 1;
	q.push(2*N);
	q.push(4*N+2);
	while(!q.empty()) {
		int t = q.front();
		q.pop();
		for(auto a : e[t]) if(dp[a] == 0) {
			dp[a] = dp[t] + 1;
			q.push(a);
		}
	}

	printf("%d", min(dp[2*N+1], dp[4*N+3]));
	return 0;
}

Compilation message

golf.cpp: In function 'int main()':
golf.cpp:41:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d%d%d", &S, &T, &U, &V, &N);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
golf.cpp:42:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=0; i<N; i++) scanf("%d%d%d%d", A+i, B+i, C+i, D+i);
                         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 512 KB Output is correct
2 Correct 6 ms 512 KB Output is correct
3 Correct 5 ms 512 KB Output is correct
4 Correct 7 ms 512 KB Output is correct
5 Correct 35 ms 1016 KB Output is correct
6 Correct 47 ms 1016 KB Output is correct
7 Correct 37 ms 1024 KB Output is correct
8 Correct 36 ms 1024 KB Output is correct
9 Correct 38 ms 1016 KB Output is correct
10 Correct 40 ms 1016 KB Output is correct
11 Correct 37 ms 1016 KB Output is correct
12 Correct 37 ms 1024 KB Output is correct
13 Correct 46 ms 1016 KB Output is correct
14 Correct 37 ms 1024 KB Output is correct
15 Correct 7 ms 640 KB Output is correct
16 Correct 14 ms 768 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 512 KB Output is correct
2 Correct 6 ms 512 KB Output is correct
3 Correct 5 ms 512 KB Output is correct
4 Correct 7 ms 512 KB Output is correct
5 Correct 35 ms 1016 KB Output is correct
6 Correct 47 ms 1016 KB Output is correct
7 Correct 37 ms 1024 KB Output is correct
8 Correct 36 ms 1024 KB Output is correct
9 Correct 38 ms 1016 KB Output is correct
10 Correct 40 ms 1016 KB Output is correct
11 Correct 37 ms 1016 KB Output is correct
12 Correct 37 ms 1024 KB Output is correct
13 Correct 46 ms 1016 KB Output is correct
14 Correct 37 ms 1024 KB Output is correct
15 Correct 7 ms 640 KB Output is correct
16 Correct 14 ms 768 KB Output is correct
17 Correct 37 ms 872 KB Output is correct
18 Correct 37 ms 888 KB Output is correct
19 Correct 36 ms 888 KB Output is correct
20 Correct 37 ms 888 KB Output is correct
21 Correct 56 ms 888 KB Output is correct
22 Correct 53 ms 888 KB Output is correct
23 Correct 37 ms 888 KB Output is correct
24 Correct 37 ms 888 KB Output is correct
25 Correct 44 ms 912 KB Output is correct
26 Correct 39 ms 864 KB Output is correct
27 Correct 8 ms 640 KB Output is correct
28 Correct 16 ms 768 KB Output is correct
29 Correct 16 ms 768 KB Output is correct

Subtask #3
0 / 70.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 512 KB Output is correct
2 Correct 6 ms 512 KB Output is correct
3 Correct 5 ms 512 KB Output is correct
4 Correct 7 ms 512 KB Output is correct
5 Correct 35 ms 1016 KB Output is correct
6 Correct 47 ms 1016 KB Output is correct
7 Correct 37 ms 1024 KB Output is correct
8 Correct 36 ms 1024 KB Output is correct
9 Correct 38 ms 1016 KB Output is correct
10 Correct 40 ms 1016 KB Output is correct
11 Correct 37 ms 1016 KB Output is correct
12 Correct 37 ms 1024 KB Output is correct
13 Correct 46 ms 1016 KB Output is correct
14 Correct 37 ms 1024 KB Output is correct
15 Correct 7 ms 640 KB Output is correct
16 Correct 14 ms 768 KB Output is correct
17 Correct 37 ms 872 KB Output is correct
18 Correct 37 ms 888 KB Output is correct
19 Correct 36 ms 888 KB Output is correct
20 Correct 37 ms 888 KB Output is correct
21 Correct 56 ms 888 KB Output is correct
22 Correct 53 ms 888 KB Output is correct
23 Correct 37 ms 888 KB Output is correct
24 Correct 37 ms 888 KB Output is correct
25 Correct 44 ms 912 KB Output is correct
26 Correct 39 ms 864 KB Output is correct
27 Correct 8 ms 640 KB Output is correct
28 Correct 16 ms 768 KB Output is correct
29 Correct 16 ms 768 KB Output is correct
30 Execution timed out 6 ms 384 KB Time limit exceeded (wall clock)
31 Halted 0 ms 0 KB -