oj.uz

Submission #519442

# Submission time Handle Problem Language Result Execution time Memory
519442 2022-01-26T11:28:42 Z AdamGS Mecho (IOI09_mecho) C++17
38 / 100
 193 ms 7024 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
const int LIM=807, INF=1e9+7;
int dx[]={1, 0, -1, 0}, dy[]={0, 1, 0, -1};
string T[LIM];
int odl[LIM][LIM], wolne[LIM][LIM], n, s;
bool pole(int a, int b) {
	return 0<=a && a<n && 0<=b && b<n;
}
bool ok(int x) {
	queue<pair<int,int>>q;
	rep(i, n) rep(j, n) {
		if(T[i][j]=='M') {
			q.push({i, j});
			odl[i][j]=x*s;
		} else odl[i][j]=INF;
	}
	while(!q.empty()) {
		int a=q.front().st, b=q.front().nd; q.pop();
		if(odl[a][b]>wolne[a][b]) continue;
		if(T[a][b]=='D') return true;
		rep(i, 4) if(pole(a+dx[i], b+dy[i])) {
			if((T[a+dx[i]][b+dy[i]]=='G' || T[a+dx[i]][b+dy[i]]=='D') && odl[a+dx[i]][b+dy[i]]==INF) {
				odl[a+dx[i]][b+dy[i]]=odl[a][b]+1;
				q.push({a+dx[i], b+dy[i]});
			}
		}
	}
	return false;
}
int main() {
	ios_base::sync_with_stdio(0); cin.tie(0);
	cin >> n >> s;
	queue<pair<int,int>>q;
	rep(i, n) {
		cin >> T[i];
		rep(j, n) {
			if(T[i][j]=='H') q.push({i, j});
			else wolne[i][j]=INF;
		}
	}
	while(!q.empty()) {
		int a=q.front().st, b=q.front().nd; q.pop();
		rep(i, 4) if(pole(a+dx[i], b+dy[i])) {
			if((T[a+dx[i]][b+dy[i]]=='G' || T[a+dx[i]][b+dy[i]]=='M') && wolne[a+dx[i]][b+dy[i]]==INF) {
				wolne[a+dx[i]][b+dy[i]]=wolne[a][b]+s;
				q.push({a+dx[i], b+dy[i]});
			}
		}
	}
	if(!ok(0)) {
		cout << -1 << '\n';
		return 0;
	}
	int p=0, k=LIM*LIM;
	while(p<k) {
		int sr=(p+k+1)/2;
		if(ok(sr)) p=sr; else k=sr-1;
	}
	cout << p << '\n';
}

Subtask #1
38.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 332 KB Output isn't correct
2 Incorrect 0 ms 332 KB Output isn't correct
3 Incorrect 0 ms 332 KB Output isn't correct
4 Incorrect 0 ms 332 KB Output isn't correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 90 ms 6724 KB Output is correct
8 Incorrect 1 ms 348 KB Output isn't correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Incorrect 1 ms 720 KB Output isn't correct
13 Incorrect 1 ms 588 KB Output isn't correct
14 Correct 1 ms 716 KB Output is correct
15 Incorrect 1 ms 588 KB Output isn't correct
16 Correct 1 ms 460 KB Output is correct
17 Incorrect 1 ms 460 KB Output isn't correct
18 Correct 1 ms 516 KB Output is correct
19 Incorrect 1 ms 460 KB Output isn't correct
20 Correct 1 ms 472 KB Output is correct
21 Incorrect 1 ms 588 KB Output isn't correct
22 Correct 1 ms 588 KB Output is correct
23 Incorrect 1 ms 596 KB Output isn't correct
24 Correct 1 ms 588 KB Output is correct
25 Incorrect 1 ms 716 KB Output isn't correct
26 Correct 1 ms 716 KB Output is correct
27 Incorrect 1 ms 716 KB Output isn't correct
28 Correct 1 ms 732 KB Output is correct
29 Incorrect 1 ms 716 KB Output isn't correct
30 Correct 1 ms 732 KB Output is correct
31 Incorrect 1 ms 728 KB Output isn't correct
32 Correct 1 ms 720 KB Output is correct
33 Incorrect 5 ms 2784 KB Output isn't correct
34 Correct 5 ms 2780 KB Output is correct
35 Correct 27 ms 2796 KB Output is correct
36 Incorrect 7 ms 3156 KB Output isn't correct
37 Correct 6 ms 3156 KB Output is correct
38 Correct 26 ms 3196 KB Output is correct
39 Incorrect 9 ms 3580 KB Output isn't correct
40 Correct 7 ms 3572 KB Output is correct
41 Correct 33 ms 3524 KB Output is correct
42 Incorrect 9 ms 3916 KB Output isn't correct
43 Correct 9 ms 4020 KB Output is correct
44 Correct 47 ms 4008 KB Output is correct
45 Incorrect 11 ms 4292 KB Output isn't correct
46 Correct 10 ms 4428 KB Output is correct
47 Correct 49 ms 4428 KB Output is correct
48 Incorrect 11 ms 4812 KB Output isn't correct
49 Correct 11 ms 4812 KB Output is correct
50 Correct 63 ms 4812 KB Output is correct
51 Incorrect 15 ms 5196 KB Output isn't correct
52 Correct 13 ms 5196 KB Output is correct
53 Correct 71 ms 5312 KB Output is correct
54 Incorrect 15 ms 5708 KB Output isn't correct
55 Correct 15 ms 5764 KB Output is correct
56 Correct 82 ms 5708 KB Output is correct
57 Incorrect 17 ms 6216 KB Output isn't correct
58 Correct 17 ms 6196 KB Output is correct
59 Correct 108 ms 6220 KB Output is correct
60 Incorrect 20 ms 6624 KB Output isn't correct
61 Correct 20 ms 6580 KB Output is correct
62 Correct 114 ms 6636 KB Output is correct
63 Correct 109 ms 6684 KB Output is correct
64 Correct 193 ms 6624 KB Output is correct
65 Correct 178 ms 6680 KB Output is correct
66 Incorrect 134 ms 6588 KB Output isn't correct
67 Correct 31 ms 6596 KB Output is correct
68 Correct 52 ms 6632 KB Output is correct
69 Correct 51 ms 6724 KB Output is correct
70 Correct 48 ms 6640 KB Output is correct
71 Correct 45 ms 6704 KB Output is correct
72 Incorrect 37 ms 6600 KB Output isn't correct
73 Incorrect 40 ms 6868 KB Output isn't correct
74 Correct 63 ms 6896 KB Output is correct
75 Correct 65 ms 6880 KB Output is correct
76 Correct 65 ms 7024 KB Output is correct
77 Correct 66 ms 6860 KB Output is correct
78 Correct 26 ms 6936 KB Output is correct
79 Correct 66 ms 6860 KB Output is correct
80 Correct 61 ms 6852 KB Output is correct
81 Correct 69 ms 6932 KB Output is correct
82 Correct 63 ms 6876 KB Output is correct
83 Correct 77 ms 6892 KB Output is correct
84 Correct 79 ms 6892 KB Output is correct
85 Correct 68 ms 6876 KB Output is correct
86 Correct 87 ms 6892 KB Output is correct
87 Correct 82 ms 6888 KB Output is correct
88 Correct 77 ms 6776 KB Output is correct
89 Correct 96 ms 6848 KB Output is correct
90 Correct 88 ms 6764 KB Output is correct
91 Correct 85 ms 6848 KB Output is correct
92 Correct 79 ms 6840 KB Output is correct