oj.uz

Submission #1099993

# Submission time Handle Problem Language Result Execution time Memory
1099993 2024-10-12T10:48:52 Z chaoslong Mecho (IOI09_mecho) C++14
84 / 100
 178 ms 18612 KB 
// Calm down.
// Think three times, code twice.
#include "bits/stdc++.h"
#define forr(_a,_b,_c) for(int _a = (_b); _a <= (_c); ++_a)
#define ford(_a,_b,_c) for(int _a = (_b) + 1; _a --> (_c);)
#define forf(_a,_b,_c) for(int _a = (_b); _a < (_c); ++_a)
#define st first
#define nd second
#define ll long long
#define ull unsigned long long
#define pii pair <ll,ll>
#define pll pair <ll,ll>
#define piii pair <ll,pii>
#define vi vector <int>
#define pb push_back
#define mp make_pair
#define all(x) begin(x),end(x)
#define mask(i) (1LL << (i))
#define bit(x, i) (((x) >> (i)) & 1)
#define bp __builtin_popcountll
#define file "test"

using namespace std;
const int N = 2e5 + 5;
const int mod = 1e9 + 7; // 998244353
const ll oo = 1e18;

pii bd, en;
ll n, s, dx[] {1, -1, 0, 0}, dy[] {0, 0, 1, -1}, d[1005][1005], d1[1005][1005];
char a[1005][1005];
queue<piii> q;

bool check(ll x, ll y) {
    if(x > n || x < 1 || y > n || y < 1 || a[x][y] == 'T') return false;
    return true;
}

bool kt(ll mid) {
    memset(d1, 0, sizeof d1);
    q.push({mid * s, {bd.st, bd.nd}});
    while(q.size()) {
        ll dxy = q.front().st, x = q.front().nd.st, y = q.front().nd.nd; q.pop();
        if(d1[x][y]) continue;
        d1[x][y] = 1;
        forr(i, 0, 3) {
            ll nx = x + dx[i], ny = y + dy[i];
            if(!check(nx, ny)) continue;
            if((dxy + 1) / s < d[nx][ny]) {
//                cout << nx << " " << ny << " " << dxy + 1 << " " << d[nx][ny] << " " << (dxy + 1) / s + ((dxy + 1) % s != 0) << "\n";
                q.push({dxy + 1, {nx, ny}});
            }
        }
    }
    return d1[en.st][en.nd];
}

void to_nho_cau() {
    cin >> n >> s;
    memset(d, 63, sizeof d);
    forr(i, 1, n) {
        forr(j, 1, n) {
            cin >> a[i][j];
            if(a[i][j] == 'H') {
                d[i][j] = 0;
                q.push({0, {i, j}});
            }
            if(a[i][j] == 'M') bd = {i, j};
            if(a[i][j] == 'D') en = {i, j};
        }
    }
    while(q.size()) {
        ll dxy = q.front().st, x = q.front().nd.st, y = q.front().nd.nd; q.pop();
        if(d[x][y] < dxy) continue;
        forr(i, 0, 3) {
            ll nx = x + dx[i], ny = y + dy[i];
            if(!check(nx, ny) || a[nx][ny] == 'D') continue;
            if(dxy + 1 < d[nx][ny]) {
                d[nx][ny] = dxy + 1;
                q.push({dxy + 1, {nx, ny}});
            }
        }
    }
    ll l = 0, r = mod, ans = -1;
    while(l <= r) {
        ll mid = (l + r) >> 1;
        if(kt(mid)) {
            ans = mid;
            l = mid + 1;
        } else r = mid - 1;
    }
    cout << ans << "\n";
}

signed main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
//    #ifdef LOCAL
//        freopen(file".inp","r",stdin);
//        freopen(file".out","w",stdout);
//    #endif
    int t = 1;
    //cin >> t;
    while(t--) to_nho_cau();
}

Subtask #1
84.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 16984 KB Output is correct
2 Correct 7 ms 16988 KB Output is correct
3 Correct 7 ms 16988 KB Output is correct
4 Correct 6 ms 16856 KB Output is correct
5 Correct 6 ms 16984 KB Output is correct
6 Correct 7 ms 16988 KB Output is correct
7 Correct 145 ms 18008 KB Output is correct
8 Correct 7 ms 16984 KB Output is correct
9 Correct 7 ms 16988 KB Output is correct
10 Correct 7 ms 16984 KB Output is correct
11 Correct 7 ms 16988 KB Output is correct
12 Incorrect 7 ms 17152 KB Output isn't correct
13 Incorrect 7 ms 16988 KB Output isn't correct
14 Correct 8 ms 17100 KB Output is correct
15 Correct 7 ms 17360 KB Output is correct
16 Correct 7 ms 16984 KB Output is correct
17 Correct 7 ms 16988 KB Output is correct
18 Correct 8 ms 16984 KB Output is correct
19 Correct 7 ms 16984 KB Output is correct
20 Correct 7 ms 17108 KB Output is correct
21 Correct 7 ms 17240 KB Output is correct
22 Correct 7 ms 16984 KB Output is correct
23 Correct 7 ms 16988 KB Output is correct
24 Correct 8 ms 17140 KB Output is correct
25 Correct 8 ms 16988 KB Output is correct
26 Correct 7 ms 16988 KB Output is correct
27 Correct 8 ms 16988 KB Output is correct
28 Correct 8 ms 16988 KB Output is correct
29 Correct 7 ms 16988 KB Output is correct
30 Correct 7 ms 16988 KB Output is correct
31 Correct 7 ms 16988 KB Output is correct
32 Correct 7 ms 17104 KB Output is correct
33 Correct 12 ms 17244 KB Output is correct
34 Correct 11 ms 17244 KB Output is correct
35 Correct 36 ms 17376 KB Output is correct
36 Correct 10 ms 17240 KB Output is correct
37 Correct 14 ms 17420 KB Output is correct
38 Correct 46 ms 17244 KB Output is correct
39 Correct 11 ms 17240 KB Output is correct
40 Correct 11 ms 17244 KB Output is correct
41 Correct 55 ms 17476 KB Output is correct
42 Correct 13 ms 17496 KB Output is correct
43 Correct 12 ms 17500 KB Output is correct
44 Correct 78 ms 17520 KB Output is correct
45 Correct 16 ms 17544 KB Output is correct
46 Correct 14 ms 17500 KB Output is correct
47 Correct 90 ms 17580 KB Output is correct
48 Correct 16 ms 17500 KB Output is correct
49 Correct 15 ms 17612 KB Output is correct
50 Correct 101 ms 17500 KB Output is correct
51 Correct 18 ms 17496 KB Output is correct
52 Correct 21 ms 17500 KB Output is correct
53 Correct 120 ms 17496 KB Output is correct
54 Correct 19 ms 17488 KB Output is correct
55 Correct 20 ms 17500 KB Output is correct
56 Correct 138 ms 17752 KB Output is correct
57 Correct 19 ms 17800 KB Output is correct
58 Correct 16 ms 17756 KB Output is correct
59 Correct 155 ms 17752 KB Output is correct
60 Correct 20 ms 17756 KB Output is correct
61 Correct 19 ms 17752 KB Output is correct
62 Correct 178 ms 17756 KB Output is correct
63 Correct 96 ms 17744 KB Output is correct
64 Correct 168 ms 17884 KB Output is correct
65 Correct 162 ms 17744 KB Output is correct
66 Correct 110 ms 17752 KB Output is correct
67 Correct 101 ms 17872 KB Output is correct
68 Correct 44 ms 17744 KB Output is correct
69 Correct 43 ms 17756 KB Output is correct
70 Correct 29 ms 18096 KB Output is correct
71 Correct 31 ms 17748 KB Output is correct
72 Incorrect 28 ms 17876 KB Output isn't correct
73 Incorrect 36 ms 18444 KB Output isn't correct
74 Correct 85 ms 18512 KB Output is correct
75 Correct 110 ms 18584 KB Output is correct
76 Correct 89 ms 18516 KB Output is correct
77 Correct 91 ms 18524 KB Output is correct
78 Correct 112 ms 18516 KB Output is correct
79 Correct 84 ms 18516 KB Output is correct
80 Correct 115 ms 18608 KB Output is correct
81 Correct 107 ms 18520 KB Output is correct
82 Correct 83 ms 18612 KB Output is correct
83 Correct 128 ms 18244 KB Output is correct
84 Correct 108 ms 18260 KB Output is correct
85 Correct 136 ms 18228 KB Output is correct
86 Correct 116 ms 18236 KB Output is correct
87 Correct 111 ms 18488 KB Output is correct
88 Correct 133 ms 18268 KB Output is correct
89 Correct 131 ms 18348 KB Output is correct
90 Correct 145 ms 18264 KB Output is correct
91 Correct 126 ms 18256 KB Output is correct
92 Correct 140 ms 18104 KB Output is correct