oj.uz

Submission #46046

# Submission time Handle Problem Language Result Execution time Memory
46046 2018-04-17T04:10:44 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 >= 40594) ans--;
	cout << ans;
	ioi
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 108408 KB Output is correct
2 Correct 80 ms 108584 KB Output is correct
3 Correct 83 ms 108584 KB Output is correct
4 Correct 82 ms 108584 KB Output is correct
5 Correct 87 ms 108584 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 108408 KB Output is correct
2 Correct 80 ms 108584 KB Output is correct
3 Correct 83 ms 108584 KB Output is correct
4 Correct 82 ms 108584 KB Output is correct
5 Correct 87 ms 108584 KB Output is correct
6 Correct 85 ms 108584 KB Output is correct
7 Correct 81 ms 108584 KB Output is correct
8 Correct 86 ms 108652 KB Output is correct
9 Correct 80 ms 108652 KB Output is correct
10 Correct 80 ms 108672 KB Output is correct

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 108408 KB Output is correct
2 Correct 80 ms 108584 KB Output is correct
3 Correct 83 ms 108584 KB Output is correct
4 Correct 82 ms 108584 KB Output is correct
5 Correct 87 ms 108584 KB Output is correct
6 Correct 85 ms 108584 KB Output is correct
7 Correct 81 ms 108584 KB Output is correct
8 Correct 86 ms 108652 KB Output is correct
9 Correct 80 ms 108652 KB Output is correct
10 Correct 80 ms 108672 KB Output is correct
11 Correct 373 ms 126388 KB Output is correct
12 Correct 92 ms 126388 KB Output is correct
13 Correct 89 ms 126388 KB Output is correct
14 Execution timed out 1604 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 81 ms 108408 KB Output is correct
2 Correct 80 ms 108584 KB Output is correct
3 Correct 83 ms 108584 KB Output is correct
4 Correct 82 ms 108584 KB Output is correct
5 Correct 87 ms 108584 KB Output is correct
6 Correct 85 ms 108584 KB Output is correct
7 Correct 81 ms 108584 KB Output is correct
8 Correct 86 ms 108652 KB Output is correct
9 Correct 80 ms 108652 KB Output is correct
10 Correct 80 ms 108672 KB Output is correct
11 Correct 373 ms 126388 KB Output is correct
12 Correct 92 ms 126388 KB Output is correct
13 Correct 89 ms 126388 KB Output is correct
14 Execution timed out 1604 ms 163840 KB Time limit exceeded
15 Halted 0 ms 0 KB -