oj.uz

Submission #122752

# Submission time Handle Problem Language Result Execution time Memory
122752 2019-06-29T08:33:41 Z 김세빈(#2998) Golf (JOI17_golf) C++14
30 / 100
 3307 ms 39800 KB 
#include <bits/stdc++.h>

using namespace std;

typedef pair <int, int> pii;

queue <pii> Q;
vector <int> X, Y;
int S[2020][2020], K[2020][2020];
int A[1010], B[1010], C[1010], D[1010];
bool chk[2020][2020];
int n, x, y, sx, sy, ex, ey;

int main()
{
	int i, j, p, d, px, py;
	
	scanf("%d%d%d%d", &sx, &sy, &ex, &ey);
	
	X.push_back(sx); X.push_back(ex);
	Y.push_back(sy); Y.push_back(ey);
	
	scanf("%d", &n);
	
	for(i=0; i<n; i++){
		scanf("%d%d%d%d", A + i, B + i, C + i, D + i);
		X.push_back(A[i]); X.push_back(B[i]);
		Y.push_back(C[i]); Y.push_back(D[i]);
	}
	
	sort(X.begin(), X.end());
	X.erase(unique(X.begin(), X.end()), X.end());
	
	sort(Y.begin(), Y.end());
	Y.erase(unique(Y.begin(), Y.end()), Y.end());
	
	x = X.size(); y = Y.size();
	
	sx = lower_bound(X.begin(), X.end(), sx) - X.begin();
	sy = lower_bound(Y.begin(), Y.end(), sy) - Y.begin();
	ex = lower_bound(X.begin(), X.end(), ex) - X.begin();
	ey = lower_bound(Y.begin(), Y.end(), ey) - Y.begin();
	
	for(i=0; i<n; i++){
		A[i] = lower_bound(X.begin(), X.end(), A[i]) - X.begin();
		B[i] = lower_bound(X.begin(), X.end(), B[i]) - X.begin();
		C[i] = lower_bound(Y.begin(), Y.end(), C[i]) - Y.begin();
		D[i] = lower_bound(Y.begin(), Y.end(), D[i]) - Y.begin();
		
		S[A[i]][C[i]] ++; S[B[i]][D[i]] ++;
		S[A[i]][D[i]] --; S[B[i]][C[i]] --;
	}
	
	for(i=0; i<x; i++){
		for(j=0; j<y; j++){
			if(i) S[i][j] += S[i - 1][j];
			if(j) S[i][j] += S[i][j - 1];
			if(i && j) S[i][j] -= S[i - 1][j - 1];
			K[i][j] = 1e9;
		}
	}
	
	chk[sx][sy] = 1; K[sx][sy] = 0;
	Q.push(pii(sx * y + sy, 0));
	
	for(; !Q.empty(); ){
		tie(p, d) = Q.front(); Q.pop();
		px = p / y; py = p % y; K[px][py] = d;
		
		if(px == ex && py == ey){
			printf("%d\n", d);
			return 0;
		}
		
		for(i=1; px+i<x; i++){
			if((py && S[px + i - 1][py] && S[px + i - 1][py - 1]) || K[px + i][py] <= d) break;
			if(chk[px + i][py]) continue;
			chk[px + i][py] = 1; Q.push(pii((px + i) * y + py, d + 1));
		}
		
		for(i=1; px-i>=0; i++){
			if((py && S[px - i][py] && S[px - i][py - 1]) || K[px - i][py] <= d) break;
			if(chk[px - i][py]) continue;
			chk[px - i][py] = 1; Q.push(pii((px - i) * y + py, d + 1));
		}
		
		for(i=1; py+i<y; i++){
			if((px && S[px][py + i - 1] && S[px - 1][py + i - 1]) || K[px][py + i] <= d) break;
			if(chk[px][py + i]) continue;
			chk[px][py + i] = 1; Q.push(pii(px * y + (py + i), d + 1));
		}
		
		for(i=1; py-i>=0; i++){
			if((px && S[px][py - i] && S[px - 1][py - i]) || K[px][py - i] <= d) break;
			if(chk[px][py - i]) continue;
			chk[px][py - i] = 1; Q.push(pii(px * y + (py - i), d + 1));
		}
	}
	
	return 0;
}

Compilation message

golf.cpp: In function 'int main()':
golf.cpp:18:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d%d", &sx, &sy, &ex, &ey);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
golf.cpp:23:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
golf.cpp:26:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d%d", A + i, B + i, C + i, D + i);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 512 KB Output is correct
3 Correct 5 ms 512 KB Output is correct
4 Correct 7 ms 2432 KB Output is correct
5 Correct 87 ms 13456 KB Output is correct
6 Correct 85 ms 14200 KB Output is correct
7 Correct 113 ms 13896 KB Output is correct
8 Correct 68 ms 14560 KB Output is correct
9 Correct 72 ms 13312 KB Output is correct
10 Correct 52 ms 14560 KB Output is correct
11 Correct 54 ms 14968 KB Output is correct
12 Correct 53 ms 14200 KB Output is correct
13 Correct 80 ms 14072 KB Output is correct
14 Correct 63 ms 14584 KB Output is correct
15 Correct 72 ms 5760 KB Output is correct
16 Correct 1126 ms 13684 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 512 KB Output is correct
3 Correct 5 ms 512 KB Output is correct
4 Correct 7 ms 2432 KB Output is correct
5 Correct 87 ms 13456 KB Output is correct
6 Correct 85 ms 14200 KB Output is correct
7 Correct 113 ms 13896 KB Output is correct
8 Correct 68 ms 14560 KB Output is correct
9 Correct 72 ms 13312 KB Output is correct
10 Correct 52 ms 14560 KB Output is correct
11 Correct 54 ms 14968 KB Output is correct
12 Correct 53 ms 14200 KB Output is correct
13 Correct 80 ms 14072 KB Output is correct
14 Correct 63 ms 14584 KB Output is correct
15 Correct 72 ms 5760 KB Output is correct
16 Correct 1126 ms 13684 KB Output is correct
17 Correct 1970 ms 39120 KB Output is correct
18 Correct 3307 ms 39236 KB Output is correct
19 Correct 422 ms 37740 KB Output is correct
20 Correct 1849 ms 38856 KB Output is correct
21 Correct 1179 ms 39800 KB Output is correct
22 Correct 645 ms 39140 KB Output is correct
23 Correct 890 ms 38648 KB Output is correct
24 Correct 1129 ms 38396 KB Output is correct
25 Correct 235 ms 37592 KB Output is correct
26 Correct 1499 ms 38440 KB Output is correct
27 Correct 109 ms 7040 KB Output is correct
28 Correct 1531 ms 15412 KB Output is correct
29 Correct 1794 ms 15744 KB Output is correct

Subtask #3
0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 512 KB Output is correct
3 Correct 5 ms 512 KB Output is correct
4 Correct 7 ms 2432 KB Output is correct
5 Correct 87 ms 13456 KB Output is correct
6 Correct 85 ms 14200 KB Output is correct
7 Correct 113 ms 13896 KB Output is correct
8 Correct 68 ms 14560 KB Output is correct
9 Correct 72 ms 13312 KB Output is correct
10 Correct 52 ms 14560 KB Output is correct
11 Correct 54 ms 14968 KB Output is correct
12 Correct 53 ms 14200 KB Output is correct
13 Correct 80 ms 14072 KB Output is correct
14 Correct 63 ms 14584 KB Output is correct
15 Correct 72 ms 5760 KB Output is correct
16 Correct 1126 ms 13684 KB Output is correct
17 Correct 1970 ms 39120 KB Output is correct
18 Correct 3307 ms 39236 KB Output is correct
19 Correct 422 ms 37740 KB Output is correct
20 Correct 1849 ms 38856 KB Output is correct
21 Correct 1179 ms 39800 KB Output is correct
22 Correct 645 ms 39140 KB Output is correct
23 Correct 890 ms 38648 KB Output is correct
24 Correct 1129 ms 38396 KB Output is correct
25 Correct 235 ms 37592 KB Output is correct
26 Correct 1499 ms 38440 KB Output is correct
27 Correct 109 ms 7040 KB Output is correct
28 Correct 1531 ms 15412 KB Output is correct
29 Correct 1794 ms 15744 KB Output is correct
30 Runtime error 105 ms 4724 KB Execution killed with signal 11 (could be triggered by violating memory limits)
31 Halted 0 ms 0 KB -