답안 #1073914

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1073914	2024-08-25T03:07:49 Z	gavangno01	Mecho (IOI09_mecho)	C++17	84 / 100	148 ms	8288 KB

mecho

#include<bits/stdc++.h>
#define pii pair<int, int>
#define fi first
#define se second
using namespace std;

const int dx[] = {1, 0, 0, -1};
const int dy[] = {0, 1, -1, 0};
const int MAXN = 8e2 + 10;
const int inf = 1e9 + 7;
int n, s;
int xe, ye;
int grid[MAXN][MAXN];
int loangbee[MAXN][MAXN];
int loangpl[MAXN][MAXN];

bool exceed(int x, int y) {
    return (x > n || x < 1 || y > n || y < 1);
}
void bfsbee() {
    queue<pair<int, int>> q;
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= n; j++) {
            if (grid[i][j] == 4) {
                q.push({i, j});
                loangbee[i][j] = 0;
            }
        }
    }
    while (!q.empty()) {
        pii temp = q.front();
        q.pop();
        int x = temp.fi;
        int y = temp.se;
        for (int i = 0; i < 4; i++) {
            int u = x + dx[i];
            int v = y + dy[i];
            if (!exceed(u, v)) {
                if (loangbee[u][v] == inf && grid[u][v] == 1) {
                    loangbee[u][v] = loangbee[x][y] + 1;
                    q.push({u, v});
                }
            }
        }
    }
}
int bfspl(int original_value) {
    queue<pair<int, int>> q;
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= n; j++) {
            if (grid[i][j] == 2) {
                q.push({i, j});
                loangpl[i][j] = 0;
                if (loangbee[i][j] <= original_value) q.pop();
            }
            else {
                loangpl[i][j] = inf;
            }
        }
    }
    while (!q.empty()) {
        pii temp = q.front();
        q.pop();
        int x = temp.fi;
        int y = temp.se;
        for (int i = 0; i < 4; i++) {
            int u = x + dx[i];
            int v = y + dy[i];
            if (!exceed(u, v)) {
                if (loangpl[u][v] == inf && grid[u][v] == 1) {
                    if ((loangpl[x][y] + 1) / s < loangbee[u][v] - original_value) {
                        q.push({u, v});
                        loangpl[u][v] = loangpl[x][y] + 1;
                    };
                }
            }
        }
    }
    for (int i = 0; i < 4; i++) {
        int u = xe + dx[i];
        int v = ye + dy[i];
        if (exceed(u, v)) continue;
        if (loangpl[u][v] != inf && grid[u][v] != 2) return 1;
    }
    return 0;
}

int main() {
    cin >> n >> s;

    for (int i = 1; i <= n; i++) {
        string str;
        cin >> str;
        for (int j = 1; j <= n; j++) {
            char c = str[j-1];
            loangpl[i][j] = inf;
            loangbee[i][j] = inf;
            if (c == 'T') {
                grid[i][j] = 0;
            }
            if (c == 'G') grid[i][j] = 1;
            if (c == 'M') grid[i][j] = 2;
            if (c == 'D') {
                grid[i][j] = 1;
                xe = i;
                ye = j;
            }
            if (c == 'H') grid[i][j] = 4;
        }
    }
    bfsbee();
//    for (int i = 1; i <= n; i++) {
//        for (int j = 1; j <= n; j++) {
//            cout << loangbee[i][j] << " ";
//        }
//        cout << endl;
//    }
//    cout << "map nguoi" << endl;
//    for (int i = 1; i <= n; i++) {
//        for (int j = 1; j <= n; j++) {
//            cout << loangpl[i][j] << " ";
//        }
//        cout << endl;
//
    int l = 0, r = n * n;
    while (l <= r) {
        int mid = (l + r) / 2;
        if (bfspl(mid) == 1) {
            l = mid + 1;
        }
        else r = mid - 1;
    }
    cout << l - 1;
    return 0;
}

Subtask #1

84.0 / 100.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	63 ms	7980 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Incorrect	1 ms	856 KB	Output isn't correct
13	Incorrect	1 ms	860 KB	Output isn't correct
14	Correct	1 ms	860 KB	Output is correct
15	Correct	0 ms	604 KB	Output is correct
16	Correct	0 ms	604 KB	Output is correct
17	Correct	0 ms	604 KB	Output is correct
18	Correct	1 ms	600 KB	Output is correct
19	Correct	1 ms	604 KB	Output is correct
20	Correct	0 ms	604 KB	Output is correct
21	Correct	1 ms	604 KB	Output is correct
22	Correct	0 ms	604 KB	Output is correct
23	Correct	1 ms	860 KB	Output is correct
24	Correct	0 ms	860 KB	Output is correct
25	Correct	1 ms	860 KB	Output is correct
26	Correct	1 ms	860 KB	Output is correct
27	Correct	1 ms	860 KB	Output is correct
28	Correct	1 ms	860 KB	Output is correct
29	Correct	1 ms	1112 KB	Output is correct
30	Correct	1 ms	1116 KB	Output is correct
31	Correct	1 ms	1116 KB	Output is correct
32	Correct	1 ms	1116 KB	Output is correct
33	Correct	7 ms	3740 KB	Output is correct
34	Correct	6 ms	3676 KB	Output is correct
35	Correct	16 ms	3796 KB	Output is correct
36	Correct	9 ms	4260 KB	Output is correct
37	Correct	8 ms	4188 KB	Output is correct
38	Correct	25 ms	4188 KB	Output is correct
39	Correct	12 ms	4696 KB	Output is correct
40	Correct	10 ms	4700 KB	Output is correct
41	Correct	28 ms	4740 KB	Output is correct
42	Correct	12 ms	5212 KB	Output is correct
43	Correct	12 ms	5208 KB	Output is correct
44	Correct	41 ms	4952 KB	Output is correct
45	Correct	14 ms	5468 KB	Output is correct
46	Correct	15 ms	5468 KB	Output is correct
47	Correct	40 ms	5468 KB	Output is correct
48	Correct	18 ms	5980 KB	Output is correct
49	Correct	18 ms	5980 KB	Output is correct
50	Correct	58 ms	5980 KB	Output is correct
51	Correct	21 ms	6496 KB	Output is correct
52	Correct	20 ms	6492 KB	Output is correct
53	Correct	63 ms	6492 KB	Output is correct
54	Correct	22 ms	7000 KB	Output is correct
55	Correct	22 ms	7004 KB	Output is correct
56	Correct	70 ms	7112 KB	Output is correct
57	Correct	24 ms	7516 KB	Output is correct
58	Correct	27 ms	7512 KB	Output is correct
59	Correct	82 ms	7516 KB	Output is correct
60	Correct	38 ms	8056 KB	Output is correct
61	Correct	29 ms	8028 KB	Output is correct
62	Correct	88 ms	8024 KB	Output is correct
63	Correct	89 ms	8028 KB	Output is correct
64	Correct	148 ms	8024 KB	Output is correct
65	Correct	119 ms	8024 KB	Output is correct
66	Correct	100 ms	8024 KB	Output is correct
67	Correct	93 ms	8028 KB	Output is correct
68	Correct	53 ms	8028 KB	Output is correct
69	Correct	49 ms	8028 KB	Output is correct
70	Correct	43 ms	7840 KB	Output is correct
71	Correct	46 ms	8028 KB	Output is correct
72	Incorrect	50 ms	8108 KB	Output isn't correct
73	Incorrect	60 ms	8284 KB	Output isn't correct
74	Correct	51 ms	8280 KB	Output is correct
75	Correct	58 ms	8284 KB	Output is correct
76	Correct	56 ms	8284 KB	Output is correct
77	Correct	52 ms	8280 KB	Output is correct
78	Correct	61 ms	8288 KB	Output is correct
79	Correct	55 ms	8284 KB	Output is correct
80	Correct	53 ms	8280 KB	Output is correct
81	Correct	58 ms	8280 KB	Output is correct
82	Correct	65 ms	8184 KB	Output is correct
83	Correct	62 ms	8248 KB	Output is correct
84	Correct	56 ms	8028 KB	Output is correct
85	Correct	62 ms	8024 KB	Output is correct
86	Correct	57 ms	8244 KB	Output is correct
87	Correct	59 ms	8280 KB	Output is correct
88	Correct	63 ms	8024 KB	Output is correct
89	Correct	63 ms	8024 KB	Output is correct
90	Correct	63 ms	8028 KB	Output is correct
91	Correct	60 ms	8024 KB	Output is correct
92	Correct	71 ms	8272 KB	Output is correct