oj.uz

Submission #571020

# Submission time Handle Problem Language Result Execution time Memory
571020 2022-06-01T04:49:05 Z f4t4nt Mecho (IOI09_mecho) C++
84 / 100
 392 ms 16404 KB 
#include <algorithm>
#include <cmath>
#include <ctime>
#include <deque>
#include <fstream>
#include <functional>
#include <iostream>
#include <iomanip>
#include <iterator>
#include <list>
#include <map>
#include <math.h>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <stack>
#include <stdio.h>
#include <string>
#include <tuple>
#include <unordered_set>
#include <utility>
#include <vector>

using namespace std;

using ll = long long;
using ull = unsigned long long;
using ld = long double;
using ch = char;
using str = string;

#define pb push_back
#define elif else if
#define sz(C) (ll) C.size()
#define mp make_pair
#define mt make_tuple
#define flip(C) reverse(C.begin(), C.end())
#define ssort(C) sort(C.begin(), C.end())
#define rsort(C) sort(C.begin(), C.end(), greater<>())

#define FOR(x, e) for(ll  x = 0; x < (ll) e; x++)
#define FORR(x, e) for(ll x = (ll) e - 1; x >= 0; x--)
#define FOB(x, b, e) for(auto x = b; x < e; x++)
#define FOI(x, e, i) for(ll x = 0; x < (ll) e; x += (ll) i)
#define FOBI(x, b, e, i) for(ll x = (ll) b; x < (ll) e; x += (ll) i)
#define FORE(x, C) for(auto &x : C)

#ifdef LOCAL
#include "tester.cpp"
#define main test_main
extern istringstream fin;
extern ostringstream fout;
string test_file_name = "tests";
#define cin fin
#define cout fout
#endif

vector<int> di { -1, 0, 1, 0};
vector<int> dj { 0, -1, 0, 1};

void fill_b(ll &n, vector<vector<char>> &g, queue<pair<ll, ll>> &bfs_b, vector<vector<ll>> &d_b) {
    while(sz(bfs_b)) {
        ll i0 = bfs_b.front().first, j0 = bfs_b.front().second;
        bfs_b.pop();
        FOR(k, 4) {
            ll i1 = i0 + di[k], j1 = j0 + dj[k];
            if(i1 < 0 || i1 >= n || j1 < 0 || j1 >= n) continue;
            if(g[i1][j1] == 'T' || g[i1][j1] == 'D') continue;
            if(d_b[i1][j1] != 1e18) continue;
            d_b[i1][j1] = d_b[i0][j0] + 1;
            bfs_b.push({i1, j1});
        }
    }
}

bool valid(ll &mid, ll &n, ll &s, vector<vector<ll>> &d_b, vector<vector<char>> &g, queue<pair<ll, ll>> bfs_m, vector<vector<ll>> d_m) {
    while(sz(bfs_m)) {
        ll i0 = bfs_m.front().first, j0 = bfs_m.front().second, d = d_m[i0][j0] + 1;
        bfs_m.pop();
        FOR(k, 4) {
            ll i1 = i0 + di[k], j1 = j0 + dj[k];
            if(i1 < 0 || i1 >= n || j1 < 0 || j1 >= n) continue;
            if(g[i1][j1] == 'T') continue;
            if(d_m[i1][j1] != 1e18) continue;
            if(d_b[i1][j1] <= mid + d / s) continue;
            if(g[i1][j1] == 'D') return true;
            d_m[i1][j1] = d;
            bfs_m.push({i1, j1});
        }
    }
    return false;
}

int main() {
    ll n, s, lo = 0, hi = 1e18;
    cin >> n >> s;
    vector<vector<char>> g(n, vector<char>(n));
    vector<vector<ll>> d_b(n, vector<ll>(n, 1e18)), d_m(n, vector<ll>(n, 1e18));
    queue<pair<ll, ll>> bfs_b, bfs_m;
    FOR(i, n) FOR(j, n) {
        cin >> g[i][j];
        if(g[i][j] == 'H') {
            bfs_b.push({i, j});
            d_b[i][j] = 0;
        }
        elif(g[i][j] == 'M') {
            bfs_m.push({i, j});
            d_m[i][j] = 0;
        }
    }
    fill_b(n, g, bfs_b, d_b);
    while(hi - lo > 0) {
        ll mid = lo + (hi - lo + 1) / 2;
        if(valid(mid, n, s, d_b, g, bfs_m, d_m)) lo = mid;
        else hi = mid - 1;
    }
    if(valid(lo, n, s, d_b, g, bfs_m, d_m)) cout << lo << '\n';
    else cout << "-1\n";
    return 0;
}

Subtask #1
84.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 232 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 291 ms 16260 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Incorrect 1 ms 340 KB Output isn't correct
13 Incorrect 1 ms 340 KB Output isn't correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 2 ms 340 KB Output is correct
32 Correct 2 ms 340 KB Output is correct
33 Correct 27 ms 3568 KB Output is correct
34 Correct 28 ms 3340 KB Output is correct
35 Correct 49 ms 3348 KB Output is correct
36 Correct 36 ms 4460 KB Output is correct
37 Correct 37 ms 4256 KB Output is correct
38 Correct 63 ms 4432 KB Output is correct
39 Correct 45 ms 5500 KB Output is correct
40 Correct 48 ms 5312 KB Output is correct
41 Correct 84 ms 5452 KB Output is correct
42 Correct 60 ms 6672 KB Output is correct
43 Correct 60 ms 6656 KB Output is correct
44 Correct 110 ms 6580 KB Output is correct
45 Correct 73 ms 7864 KB Output is correct
46 Correct 69 ms 7908 KB Output is correct
47 Correct 130 ms 7892 KB Output is correct
48 Correct 91 ms 9384 KB Output is correct
49 Correct 92 ms 9284 KB Output is correct
50 Correct 160 ms 9360 KB Output is correct
51 Correct 111 ms 10872 KB Output is correct
52 Correct 106 ms 10808 KB Output is correct
53 Correct 209 ms 10916 KB Output is correct
54 Correct 132 ms 12552 KB Output is correct
55 Correct 126 ms 12620 KB Output is correct
56 Correct 236 ms 12504 KB Output is correct
57 Correct 152 ms 14300 KB Output is correct
58 Correct 147 ms 14300 KB Output is correct
59 Correct 275 ms 14300 KB Output is correct
60 Correct 173 ms 16228 KB Output is correct
61 Correct 170 ms 16148 KB Output is correct
62 Correct 324 ms 16392 KB Output is correct
63 Correct 287 ms 16172 KB Output is correct
64 Correct 381 ms 16176 KB Output is correct
65 Correct 392 ms 16252 KB Output is correct
66 Correct 310 ms 16220 KB Output is correct
67 Correct 290 ms 16188 KB Output is correct
68 Correct 211 ms 16212 KB Output is correct
69 Correct 212 ms 16192 KB Output is correct
70 Correct 194 ms 16224 KB Output is correct
71 Correct 206 ms 16324 KB Output is correct
72 Incorrect 205 ms 16316 KB Output isn't correct
73 Incorrect 236 ms 16304 KB Output isn't correct
74 Correct 232 ms 16304 KB Output is correct
75 Correct 229 ms 16280 KB Output is correct
76 Correct 253 ms 16404 KB Output is correct
77 Correct 239 ms 16112 KB Output is correct
78 Correct 242 ms 16232 KB Output is correct
79 Correct 217 ms 16352 KB Output is correct
80 Correct 246 ms 16396 KB Output is correct
81 Correct 239 ms 16388 KB Output is correct
82 Correct 237 ms 16228 KB Output is correct
83 Correct 269 ms 16204 KB Output is correct
84 Correct 272 ms 16188 KB Output is correct
85 Correct 246 ms 16328 KB Output is correct
86 Correct 265 ms 16196 KB Output is correct
87 Correct 267 ms 16176 KB Output is correct
88 Correct 265 ms 16300 KB Output is correct
89 Correct 278 ms 16200 KB Output is correct
90 Correct 270 ms 16268 KB Output is correct
91 Correct 278 ms 16188 KB Output is correct
92 Correct 282 ms 16220 KB Output is correct