oj.uz

답안 #122367

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
122367 2019-06-28T05:57:42 Z 이온조(#2989) 로봇 (APIO13_robots) C++14
60 / 100
 1500 ms 156000 KB 
#include <cstdio>
#include <algorithm>
#include <queue>
#include <tuple>
#include <set>
#pragma GCC optimize ("Ofast")
using namespace std;
using pii = pair<int, int>;

struct node {
	int x, y, s, e;
};

const int dx[4] = {-1, 0, 1, 0};
const int dy[4] = {0, 1, 0, -1};

char A[509][509];
int D[501][501][10][10];
char I[501][501][10][10];
pii E[501][501][4];
bool vs[501][501][10][10];
vector<node> S[250009];

pii go(int x, int y, int dir) {
	int xx = x, yy = y, dd = dir;
	if(E[x][y][dir] != (pii){0, 0}) return E[x][y][dir];
	E[x][y][dir] = {-1, -1};
	// printf("in go:  x: %d, y: %d, dir: %d\n", x, y, dir);
	if(A[x][y] == 'A') dir += 3, dir %= 4;
	if(A[x][y] == 'C') dir += 1, dir %= 4;
	int X = x + dx[dir], Y = y + dy[dir];
	if(A[X][Y] == 'x') return E[xx][yy][dd] = {x, y};
	return E[x][y][dd] = go(X, Y, dir);
}

inline void mark(node X, int dist) {
	int a = X.x, b = X.y, c = X.s, d = X.e;
	vs[a][b][c][d] = 1; D[a][b][c][d] = dist;
}

int main() {
	int N, W, H; scanf("%d%d%d",&N,&W,&H);
	for(int i=0; i<=H+1; i++) for(int j=0; j<=W+1; j++) A[i][j] = 'x';
	for(int i=1; i<=H; i++) scanf(" %s", A[i]+1);
	for(int i=1; i<=H; i++) {
		for(int j=1; j<=W; j++) {
			if('1' <= A[i][j] && A[i][j] <= '9') {
				int id = A[i][j] - '0';
				S[0].push_back({i, j, id, id});
			}
		}
		A[i][W+1] = 'x';
	}
	int sum = 0;
	queue<node> que;
	for(int i=1; i<=N; i++) {
		int c = 0;
		do {
			for(auto& it: S[c]) if(!vs[it.x][it.y][it.s][it.e] && it.e - it.s + 1 == i) {
				que.push(it);
				mark(it, sum + c);
			}
			while(S[c].size()) S[c].pop_back();
			int sz = que.size();
			while(sz--) {
				node P = que.front(); que.pop();
				// printf("i: %d, dist: %d, x: %d, y: %d, s: %d, e: %d\n", i, sum + c, P.x, P.y, P.s, P.e);
				for(int k=0; k<4; k++) {
					int X, Y; tie(X, Y) = go(P.x, P.y, k);
					// printf("X: %d, Y: %d\n", X, Y);
					if(!vs[X][Y][P.s][P.e] && X != -1) {
						que.push({X, Y, P.s, P.e});
						mark({X, Y, P.s, P.e}, sum + c + 1);
					}
				}
			}
			++c;
		} while(que.size());

		if(i == N) break;
		// puts("CALCULATE START");
		int gmn = 1e9;
		for(int t=1; t<=2; t++) {
			for(int p=1; p<=H; p++) {
				for(int q=1; q<=W; q++) {
					for(int j=i+1; j<=N; j++) {
						int s = j-i, e = j-1, mn = 1e9;
						if(i != 1) s = I[p][q][j-i][j-1], e = I[p][q][j-i+1][j];
						for(int k=s-1; k<=e+1; k++) {
							int v = D[p][q][j-i][k] + D[p][q][k+1][j];
							if(vs[p][q][j-i][k] && vs[p][q][k+1][j] && mn > v) {
								if(t == 1) gmn = min(gmn, v);
								if(t == 2) {
									mn = v;
									I[p][q][j-i][j] = k;
								}
							}
						}
						if(t == 2 && mn != 1e9) S[mn - gmn].push_back({p, q, j-i, j});
					}
				}
			}
		}
		sum = gmn;
		if(sum == 1e9) break;
	}
	if(sum == 1e9) puts("-1");
	else printf("%d", sum);
	return 0;
}

Compilation message

robots.cpp: In function 'int main()':
robots.cpp:42:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  int N, W, H; scanf("%d%d%d",&N,&W,&H);
               ~~~~~^~~~~~~~~~~~~~~~~~~
robots.cpp:44:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1; i<=H; i++) scanf(" %s", A[i]+1);
                          ~~~~~^~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 6272 KB Output is correct
2 Correct 7 ms 6272 KB Output is correct
3 Correct 7 ms 6272 KB Output is correct
4 Correct 7 ms 6272 KB Output is correct
5 Correct 8 ms 6400 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 6272 KB Output is correct
2 Correct 7 ms 6272 KB Output is correct
3 Correct 7 ms 6272 KB Output is correct
4 Correct 7 ms 6272 KB Output is correct
5 Correct 8 ms 6400 KB Output is correct
6 Correct 6 ms 6272 KB Output is correct
7 Correct 7 ms 6144 KB Output is correct
8 Correct 6 ms 6272 KB Output is correct
9 Correct 7 ms 6272 KB Output is correct
10 Correct 7 ms 6272 KB Output is correct

Subtask #3
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 6272 KB Output is correct
2 Correct 7 ms 6272 KB Output is correct
3 Correct 7 ms 6272 KB Output is correct
4 Correct 7 ms 6272 KB Output is correct
5 Correct 8 ms 6400 KB Output is correct
6 Correct 6 ms 6272 KB Output is correct
7 Correct 7 ms 6144 KB Output is correct
8 Correct 6 ms 6272 KB Output is correct
9 Correct 7 ms 6272 KB Output is correct
10 Correct 7 ms 6272 KB Output is correct
11 Correct 304 ms 51944 KB Output is correct
12 Correct 38 ms 39288 KB Output is correct
13 Correct 49 ms 10864 KB Output is correct
14 Correct 639 ms 60408 KB Output is correct
15 Correct 156 ms 48216 KB Output is correct

Subtask #4
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 6272 KB Output is correct
2 Correct 7 ms 6272 KB Output is correct
3 Correct 7 ms 6272 KB Output is correct
4 Correct 7 ms 6272 KB Output is correct
5 Correct 8 ms 6400 KB Output is correct
6 Correct 6 ms 6272 KB Output is correct
7 Correct 7 ms 6144 KB Output is correct
8 Correct 6 ms 6272 KB Output is correct
9 Correct 7 ms 6272 KB Output is correct
10 Correct 7 ms 6272 KB Output is correct
11 Correct 304 ms 51944 KB Output is correct
12 Correct 38 ms 39288 KB Output is correct
13 Correct 49 ms 10864 KB Output is correct
14 Correct 639 ms 60408 KB Output is correct
15 Correct 156 ms 48216 KB Output is correct
16 Correct 176 ms 18680 KB Output is correct
17 Execution timed out 1570 ms 156000 KB Time limit exceeded
18 Halted 0 ms 0 KB -