oj.uz

Submission #257339

# Submission time Handle Problem Language Result Execution time Memory
257339 2020-08-04T06:27:38 Z 임성재(#5052) None (JOI16_skating) C++17
78 / 100
 531 ms 262148 KB 
#include<bits/stdc++.h>
using namespace std;

#define fast ios::sync_with_stdio(false); cin.tie(NULL)
#define fi first
#define se second
#define pb push_back
#define eb emplace_back
#define em emplace
#define all(v) (v).begin(), (v).end()
#define pre(a) cout<<fixed; cout.precision(a)
#define mp make_pair

typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef pair<pii,pii> pipii;
const int inf = 1e9;
const ll INF = 1e18;

int n, m;
string s[1010];
priority_queue<pipii, vector<pipii>, greater<pipii>> pQ;
pii S;
pii E;
bool chk[1010][1010];
bool chk1[1010][1010];
bool chk2[1010][1010];
int dis[1010][1010];

int main() {
	fast;

	cin >> n >> m;

	for(int i=0; i<n; i++) {
		cin >> s[i];
	}

	cin >> S.fi >> S.se;
	cin >> E.fi >> E.se;

	S.fi--;
	S.se--;
	E.fi--;
	E.se--;

	for(int i=0; i<n; i++) {
		for(int j=0; j<m; j++) {
			dis[i][j] = inf;
		}
	}

	pQ.em(mp(0, 0), S);

	while(pQ.size()) {
		int cost = pQ.top().fi.fi;
		int dir = pQ.top().fi.se;
		pii cur = pQ.top().se;

		pQ.pop();

		if(cur == E) {
			cout << cost << "\n";
			return 0;
		}
		if(chk[cur.fi][cur.se]) continue;
		chk[cur.fi][cur.se] = true;
		
		if(dir!=1) {
			int l, r;
			for(l = cur.fi; 0 <= l && s[l][cur.se] == '.'; l--);
			for(r = cur.fi; r < n && s[r][cur.se] == '.'; r++);

			l++;
			r--;

			for(int i=l; i<=r; i++) {
				//chk1[i][cur.se] = true;
				
				if(i < cur.fi) {
					int d = min(2 * i - 2 * l + 1, 2 * cur.fi - 2 * i);

					pQ.em(mp(cost + d, 1), mp(i, cur.se));
				}
				else if(i > cur.fi) {
					int d = min(2 * r - 2 * i + 1, 2 * i - 2 * cur.fi);				
					
					pQ.em(mp(cost + d, 1), mp(i, cur.se));
				}
			}
		}
		
		if(dir != 2) {
			int l, r;
			for(l = cur.se; 0 <= l && s[cur.fi][l] == '.'; l--);
			for(r = cur.se; r < m && s[cur.fi][r] == '.'; r++);

			l++;
			r--;

			for(int i=l; i<=r; i++) {
				//chk2[cur.fi][i] = true;
				if(i < cur.se) {
					int d = min(2 * i - 2 * l + 1, 2 * cur.se - 2 * i);

					pQ.em(mp(cost + d, 2), mp(cur.fi, i));
				}
				else if(i > cur.se) {
					int d = min(2 * r - 2 * i + 1, 2 * i - 2 * cur.se);				
					
					pQ.em(mp(cost + d, 2), mp(cur.fi, i));
				}
			}
		}
	}

	cout << "-1\n";
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct

Subtask #2
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 531 ms 67224 KB Output is correct
12 Correct 403 ms 67224 KB Output is correct
13 Correct 46 ms 18016 KB Output is correct
14 Correct 18 ms 1788 KB Output is correct
15 Correct 1 ms 1280 KB Output is correct
16 Correct 241 ms 18000 KB Output is correct
17 Correct 43 ms 1664 KB Output is correct
18 Correct 15 ms 1408 KB Output is correct
19 Correct 79 ms 3560 KB Output is correct
20 Correct 299 ms 34236 KB Output is correct
21 Correct 2 ms 1408 KB Output is correct
22 Correct 2 ms 1408 KB Output is correct
23 Correct 16 ms 1536 KB Output is correct
24 Correct 404 ms 9820 KB Output is correct
25 Correct 7 ms 1408 KB Output is correct
26 Correct 10 ms 1408 KB Output is correct

Subtask #3
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 531 ms 67224 KB Output is correct
12 Correct 403 ms 67224 KB Output is correct
13 Correct 46 ms 18016 KB Output is correct
14 Correct 18 ms 1788 KB Output is correct
15 Correct 1 ms 1280 KB Output is correct
16 Correct 241 ms 18000 KB Output is correct
17 Correct 43 ms 1664 KB Output is correct
18 Correct 15 ms 1408 KB Output is correct
19 Correct 79 ms 3560 KB Output is correct
20 Correct 299 ms 34236 KB Output is correct
21 Correct 2 ms 1408 KB Output is correct
22 Correct 2 ms 1408 KB Output is correct
23 Correct 16 ms 1536 KB Output is correct
24 Correct 404 ms 9820 KB Output is correct
25 Correct 7 ms 1408 KB Output is correct
26 Correct 10 ms 1408 KB Output is correct
27 Runtime error 433 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)
28 Halted 0 ms 0 KB -