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답안 #46064

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
46064 2018-04-17T04:37:55 Z RockyB 로봇 (APIO13_robots) C++11
60 / 100
 1297 ms 154944 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 emplace_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)300 + 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[N][N][55];
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++;
		}
	}
 
	memset(dp, 0x3f, sizeof(dp));
 
	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[i][j][id[d][d]] = 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[to.f][to.s][id[v.l][v.r]];
				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[to.f][to.s][id[v.r + 1][i]] + add;
					int &up2 = dp[to.f][to.s][id[v.l][i]];
					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[to.f][to.s][id[i][v.l - 1]] + add;
					int &up3 = dp[to.f][to.s][id[i][v.r]];
					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[i][j][id[0][h - 1]]);
		}
	}
	if (ans >= inf) ans = -1;
	cout << ans;
	ioi
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 24824 KB Output is correct
2 Correct 19 ms 24936 KB Output is correct
3 Correct 19 ms 24936 KB Output is correct
4 Correct 20 ms 24936 KB Output is correct
5 Correct 19 ms 24960 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 24824 KB Output is correct
2 Correct 19 ms 24936 KB Output is correct
3 Correct 19 ms 24936 KB Output is correct
4 Correct 20 ms 24936 KB Output is correct
5 Correct 19 ms 24960 KB Output is correct
6 Correct 19 ms 24960 KB Output is correct
7 Correct 18 ms 25120 KB Output is correct
8 Correct 19 ms 25120 KB Output is correct
9 Correct 22 ms 25120 KB Output is correct
10 Correct 19 ms 25120 KB Output is correct

Subtask #3
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 24824 KB Output is correct
2 Correct 19 ms 24936 KB Output is correct
3 Correct 19 ms 24936 KB Output is correct
4 Correct 20 ms 24936 KB Output is correct
5 Correct 19 ms 24960 KB Output is correct
6 Correct 19 ms 24960 KB Output is correct
7 Correct 18 ms 25120 KB Output is correct
8 Correct 19 ms 25120 KB Output is correct
9 Correct 22 ms 25120 KB Output is correct
10 Correct 19 ms 25120 KB Output is correct
11 Correct 414 ms 56976 KB Output is correct
12 Correct 29 ms 56976 KB Output is correct
13 Correct 24 ms 56976 KB Output is correct
14 Correct 1297 ms 154944 KB Output is correct
15 Correct 145 ms 154944 KB Output is correct

Subtask #4
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 24824 KB Output is correct
2 Correct 19 ms 24936 KB Output is correct
3 Correct 19 ms 24936 KB Output is correct
4 Correct 20 ms 24936 KB Output is correct
5 Correct 19 ms 24960 KB Output is correct
6 Correct 19 ms 24960 KB Output is correct
7 Correct 18 ms 25120 KB Output is correct
8 Correct 19 ms 25120 KB Output is correct
9 Correct 22 ms 25120 KB Output is correct
10 Correct 19 ms 25120 KB Output is correct
11 Correct 414 ms 56976 KB Output is correct
12 Correct 29 ms 56976 KB Output is correct
13 Correct 24 ms 56976 KB Output is correct
14 Correct 1297 ms 154944 KB Output is correct
15 Correct 145 ms 154944 KB Output is correct
16 Runtime error 39 ms 154944 KB Execution killed with signal 11 (could be triggered by violating memory limits)
17 Halted 0 ms 0 KB -