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답안 #46058

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
46058 2018-04-17T04:28:55 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++) {
			memset(dp[c][i], 0x3f, sizeof(dp[c][i]));
			continue;
			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 13 ms 14200 KB Output is correct
2 Correct 13 ms 14208 KB Output is correct
3 Correct 13 ms 14388 KB Output is correct
4 Correct 13 ms 14552 KB Output is correct
5 Correct 13 ms 14552 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 14200 KB Output is correct
2 Correct 13 ms 14208 KB Output is correct
3 Correct 13 ms 14388 KB Output is correct
4 Correct 13 ms 14552 KB Output is correct
5 Correct 13 ms 14552 KB Output is correct
6 Correct 13 ms 14552 KB Output is correct
7 Correct 13 ms 14552 KB Output is correct
8 Correct 13 ms 14552 KB Output is correct
9 Correct 13 ms 14552 KB Output is correct
10 Correct 13 ms 14552 KB Output is correct

Subtask #3
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 14200 KB Output is correct
2 Correct 13 ms 14208 KB Output is correct
3 Correct 13 ms 14388 KB Output is correct
4 Correct 13 ms 14552 KB Output is correct
5 Correct 13 ms 14552 KB Output is correct
6 Correct 13 ms 14552 KB Output is correct
7 Correct 13 ms 14552 KB Output is correct
8 Correct 13 ms 14552 KB Output is correct
9 Correct 13 ms 14552 KB Output is correct
10 Correct 13 ms 14552 KB Output is correct
11 Correct 413 ms 78776 KB Output is correct
12 Correct 28 ms 78776 KB Output is correct
13 Correct 30 ms 78776 KB Output is correct
14 Execution timed out 1578 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 13 ms 14200 KB Output is correct
2 Correct 13 ms 14208 KB Output is correct
3 Correct 13 ms 14388 KB Output is correct
4 Correct 13 ms 14552 KB Output is correct
5 Correct 13 ms 14552 KB Output is correct
6 Correct 13 ms 14552 KB Output is correct
7 Correct 13 ms 14552 KB Output is correct
8 Correct 13 ms 14552 KB Output is correct
9 Correct 13 ms 14552 KB Output is correct
10 Correct 13 ms 14552 KB Output is correct
11 Correct 413 ms 78776 KB Output is correct
12 Correct 28 ms 78776 KB Output is correct
13 Correct 30 ms 78776 KB Output is correct
14 Execution timed out 1578 ms 163840 KB Time limit exceeded
15 Halted 0 ms 0 KB -