oj.uz

Submission #122361

# Submission time Handle Problem Language Result Execution time Memory
122361 2019-06-28T05:46:43 Z 이온조(#2989) Robots (APIO13_robots) C++14
60 / 100
 633 ms 163840 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];
	while(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') break;
		x = X; y = Y;
	}
	// puts("done");
	return E[xx][yy][dd] = {x, y};
}

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++) {
		for(int j=1; j<=W; j++) {
			scanf(" %c", &A[i][j]);
			if('1' <= A[i][j] && A[i][j] <= '9') {
				int id = A[i][j] - '0';
				S[0].push_back({i, j, id, id});
			}
		}
	}
	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]) {
						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;
		vector<pair<int, node> > R;
		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) {
							gmn = min(gmn, v);
							mn = v;
							I[p][q][j-i][j] = k;
						}
					}
					if(mn != 1e9) R.push_back({mn, {p, q, j-i, j}});
				}
			}
		}
		for(auto &it: R) {
			// printf("R: %d %d\n", it.first, it.second);
			S[it.first - gmn].push_back(it.second);
		}
		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:45:20: 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:49:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf(" %c", &A[i][j]);
    ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 6272 KB Output is correct
2 Correct 6 ms 6144 KB Output is correct
3 Correct 6 ms 6144 KB Output is correct
4 Correct 7 ms 6272 KB Output is correct
5 Correct 7 ms 6400 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 6272 KB Output is correct
2 Correct 6 ms 6144 KB Output is correct
3 Correct 6 ms 6144 KB Output is correct
4 Correct 7 ms 6272 KB Output is correct
5 Correct 7 ms 6400 KB Output is correct
6 Correct 7 ms 6272 KB Output is correct
7 Correct 6 ms 6272 KB Output is correct
8 Correct 7 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

# Verdict Execution time Memory Grader output
1 Correct 7 ms 6272 KB Output is correct
2 Correct 6 ms 6144 KB Output is correct
3 Correct 6 ms 6144 KB Output is correct
4 Correct 7 ms 6272 KB Output is correct
5 Correct 7 ms 6400 KB Output is correct
6 Correct 7 ms 6272 KB Output is correct
7 Correct 6 ms 6272 KB Output is correct
8 Correct 7 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 367 ms 54616 KB Output is correct
12 Correct 46 ms 38648 KB Output is correct
13 Correct 33 ms 7000 KB Output is correct
14 Correct 604 ms 72764 KB Output is correct
15 Correct 130 ms 49108 KB Output is correct

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 6272 KB Output is correct
2 Correct 6 ms 6144 KB Output is correct
3 Correct 6 ms 6144 KB Output is correct
4 Correct 7 ms 6272 KB Output is correct
5 Correct 7 ms 6400 KB Output is correct
6 Correct 7 ms 6272 KB Output is correct
7 Correct 6 ms 6272 KB Output is correct
8 Correct 7 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 367 ms 54616 KB Output is correct
12 Correct 46 ms 38648 KB Output is correct
13 Correct 33 ms 7000 KB Output is correct
14 Correct 604 ms 72764 KB Output is correct
15 Correct 130 ms 49108 KB Output is correct
16 Correct 116 ms 12484 KB Output is correct
17 Runtime error 633 ms 163840 KB Execution killed with signal 9 (could be triggered by violating memory limits)
18 Halted 0 ms 0 KB -