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답안 #46057

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
46057 2018-04-17T04:27:39 Z RockyB 로봇 (APIO13_robots) C++14
30 / 100
 1500 ms 163840 KB 
/// In The Name Of God

#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

#include <bits/stdc++.h>

#define f first
#define s second

#define pb push_back
#define pp pop_back
#define mp make_pair

#define sz(x) (int)x.size()
#define sqr(x) ((x) * 1ll * (x))
#define all(x) x.begin(), x.end()

#define Kazakhstan ios_base :: sync_with_stdio(0), cin.tie(0), cout.tie(0);

#define nl '\n'
#define ioi exit(0);

typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;

const int N = (int)500 + 1;
const int inf = (int)1e9 + 7;
const int mod = (int)1e9 + 7;
const ll linf = (ll)1e18 + 7;

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

using namespace std;

int n, m, h;
char a[N][N];

int dp[55][N][N];
int id[10][10];

pair <int, int> res[N][N][4];
bool was[N][N][4];

struct node {
	int l, r, x, y;
	node() {}
	node(int l, int r, int x, int y) : l(l), r(r), x(x), y(y) {}
};

vector <node> q[N * N];

bool check(int x, int y) {
	return 0 <= x && x < n && 0 <= y && y < m && a[x][y] != 'x';
}
pair <int, int> go(int x, int y, int t) {
	if (a[x][y] == 'C') t = (t + 1) % 4;
	if (a[x][y] == 'A') t = (((t - 1) + 4) % 4);
	if (was[x][y][t]) return res[x][y][t];
	was[x][y][t] = 1;
	if (check(x + dx[t], y + dy[t])) return res[x][y][t] = go(x + dx[t], y + dy[t], t);
	return res[x][y][t] = {x, y};
}

int main() {
	#ifdef IOI2018
		freopen ("in.txt", "r", stdin);
	#endif
	Kazakhstan
	cin >> h >> m >> n;

	int tmr = 0;
	for (int i = 0; i <= h; i++) {
		for (int j = i; j <= h; j++) {
			id[i][j] = tmr++;
		}
	}
	
	for (int c = 0; c < tmr; c++) {
		for (int i = 0; i < n; i++) {
			for (int j = 0; j < m; j++) {
				dp[c][i][j] = inf;
			}
		}
	}

	for (int i = 0; i < n; i++) {
		cin >> a[i];
		for (int j = 0; j < m; j++) {
			if (isdigit(a[i][j])) {
				int d = a[i][j] - '1';
				dp[id[d][d]][i][j] = 0;
				q[0].pb(node(d, d, i, j));
			}
		}
	}	
	memset(res, -1, sizeof(res));
	int to = n * m;
	for (int cur = 0; cur <= to; cur++) {
		for (auto v : q[cur]) {
			for (int i = 0; i < 4; i++) {
				pair <int, int> to = go(v.x, v.y, i);
				if (to.f == -1) continue;

				int add = mp(v.x, v.y) != to;
				//if (mp(v.x, v.y) == to) assert(0);

				int &up1 = dp[id[v.l][v.r]][to.f][to.s];
				if (up1 > cur + add) {
					up1 = cur + add;
					q[up1].pb(node(v.l, v.r, to.f, to.s));
				}
				for (int i = v.r + 1; i < h; i++) {
					int cost = cur + dp[id[v.r + 1][i]][to.f][to.s] + add;
					int &up2 = dp[id[v.l][i]][to.f][to.s];
					if (up2 > cost) {
						up2 = cost;
						q[up2].pb(node(v.l, i, to.f, to.s));
					}
				}
				for (int i = 0; i < v.l; i++) {
					int cost = cur + dp[id[i][v.l - 1]][to.f][to.s] + add;
					int &up3 = dp[id[i][v.r]][to.f][to.s];
					if (up3 > cost) {
						up3 = cost;
						q[up3].pb(node(i, v.r, to.f, to.s));
					}
				}
			}
		}
		q[cur].clear();
	}
	int ans = inf;
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < m; j++) {
			ans = min(ans, dp[id[0][h - 1]][i][j]);
		}
	}
	if (ans >= inf) ans = -1;
	cout << ans;
	ioi
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 14076 KB Output is correct
2 Correct 12 ms 14184 KB Output is correct
3 Correct 12 ms 14184 KB Output is correct
4 Correct 14 ms 14380 KB Output is correct
5 Correct 13 ms 14432 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 14076 KB Output is correct
2 Correct 12 ms 14184 KB Output is correct
3 Correct 12 ms 14184 KB Output is correct
4 Correct 14 ms 14380 KB Output is correct
5 Correct 13 ms 14432 KB Output is correct
6 Correct 12 ms 14432 KB Output is correct
7 Correct 13 ms 14432 KB Output is correct
8 Correct 16 ms 14432 KB Output is correct
9 Correct 13 ms 14432 KB Output is correct
10 Correct 13 ms 14432 KB Output is correct

Subtask #3
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 14076 KB Output is correct
2 Correct 12 ms 14184 KB Output is correct
3 Correct 12 ms 14184 KB Output is correct
4 Correct 14 ms 14380 KB Output is correct
5 Correct 13 ms 14432 KB Output is correct
6 Correct 12 ms 14432 KB Output is correct
7 Correct 13 ms 14432 KB Output is correct
8 Correct 16 ms 14432 KB Output is correct
9 Correct 13 ms 14432 KB Output is correct
10 Correct 13 ms 14432 KB Output is correct
11 Correct 428 ms 78608 KB Output is correct
12 Correct 21 ms 78608 KB Output is correct
13 Correct 33 ms 78608 KB Output is correct
14 Execution timed out 1586 ms 163840 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 14076 KB Output is correct
2 Correct 12 ms 14184 KB Output is correct
3 Correct 12 ms 14184 KB Output is correct
4 Correct 14 ms 14380 KB Output is correct
5 Correct 13 ms 14432 KB Output is correct
6 Correct 12 ms 14432 KB Output is correct
7 Correct 13 ms 14432 KB Output is correct
8 Correct 16 ms 14432 KB Output is correct
9 Correct 13 ms 14432 KB Output is correct
10 Correct 13 ms 14432 KB Output is correct
11 Correct 428 ms 78608 KB Output is correct
12 Correct 21 ms 78608 KB Output is correct
13 Correct 33 ms 78608 KB Output is correct
14 Execution timed out 1586 ms 163840 KB Time limit exceeded
15 Halted 0 ms 0 KB -