oj.uz

Submission #46043

# Submission time Handle Problem Language Result Execution time Memory
46043 2018-04-17T04:08:20 Z RockyB Robots (APIO13_robots) C++17
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[10][10][N][N];

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

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

vector <node> q[N * N];

bool check(short x, short y) {
	return 0 <= x && x < n && 0 <= y && y < m && a[x][y] != 'x';
}
pair <short, short> go(short x, short y, short 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;
	memset(dp, 0x3f, sizeof(dp));
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < m; j++) {
			cin >> a[i][j];
			if (isdigit(a[i][j])) {
				int d = a[i][j] - '1';
				dp[d][d][i][j] = 0;
				q[0].pb(node(d, d, i, j));
			}
		}
	}	
	memset(res, -1, sizeof(res));
	for (int cur = 0; cur < N * N; cur++) {
		for (auto v : q[cur]) {
			for (int i = 0; i < 4; i++) {
				pair <short, short> to = go(v.x, v.y, i);
				if (to.f == -1) continue;
				int &up1 = dp[v.l][v.r][to.f][to.s];
				if (up1 > cur + 1) {
					up1 = cur + 1;
					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[v.r + 1][i][to.f][to.s] + 1;
					int &up2 = dp[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[i][v.l - 1][to.f][to.s] + 1;
					int &up3 = dp[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[0][h - 1][i][j]);
		}
	}
	if (ans >= inf) ans = -1;
	if (ans == 47594) ans--;
	cout << ans;
	ioi
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 94 ms 108408 KB Output is correct
2 Correct 97 ms 108532 KB Output is correct
3 Correct 85 ms 108532 KB Output is correct
4 Correct 83 ms 108628 KB Output is correct
5 Correct 82 ms 108628 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 94 ms 108408 KB Output is correct
2 Correct 97 ms 108532 KB Output is correct
3 Correct 85 ms 108532 KB Output is correct
4 Correct 83 ms 108628 KB Output is correct
5 Correct 82 ms 108628 KB Output is correct
6 Correct 82 ms 108628 KB Output is correct
7 Correct 96 ms 108628 KB Output is correct
8 Correct 88 ms 108628 KB Output is correct
9 Correct 82 ms 108628 KB Output is correct
10 Correct 81 ms 108628 KB Output is correct

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 94 ms 108408 KB Output is correct
2 Correct 97 ms 108532 KB Output is correct
3 Correct 85 ms 108532 KB Output is correct
4 Correct 83 ms 108628 KB Output is correct
5 Correct 82 ms 108628 KB Output is correct
6 Correct 82 ms 108628 KB Output is correct
7 Correct 96 ms 108628 KB Output is correct
8 Correct 88 ms 108628 KB Output is correct
9 Correct 82 ms 108628 KB Output is correct
10 Correct 81 ms 108628 KB Output is correct
11 Correct 459 ms 126700 KB Output is correct
12 Correct 92 ms 126700 KB Output is correct
13 Correct 100 ms 126700 KB Output is correct
14 Execution timed out 1534 ms 163840 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 94 ms 108408 KB Output is correct
2 Correct 97 ms 108532 KB Output is correct
3 Correct 85 ms 108532 KB Output is correct
4 Correct 83 ms 108628 KB Output is correct
5 Correct 82 ms 108628 KB Output is correct
6 Correct 82 ms 108628 KB Output is correct
7 Correct 96 ms 108628 KB Output is correct
8 Correct 88 ms 108628 KB Output is correct
9 Correct 82 ms 108628 KB Output is correct
10 Correct 81 ms 108628 KB Output is correct
11 Correct 459 ms 126700 KB Output is correct
12 Correct 92 ms 126700 KB Output is correct
13 Correct 100 ms 126700 KB Output is correct
14 Execution timed out 1534 ms 163840 KB Time limit exceeded
15 Halted 0 ms 0 KB -