답안 #956816

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
956816 2024-04-02T14:04:03 Z DeltaStruct Mecho (IOI09_mecho) C++17
4 / 100
300 ms 12176 KB
#include <bits/stdc++.h>
using namespace std;

int main(){
#define int long long
  int n,m,inf=numeric_limits<int>::max(); cin >> n >> m; int sx,sy,gx,gy;
  vector<string> A(n); for (auto& a:A) cin >> a;
  queue<pair<int,int>> que; vector hd(n,vector<int>(n,inf));
  for (int i(0);i < n;++i) for (int k(0);k < n;++k){
    if (A[i][k]=='M') sx=i,sy=k;
    if (A[i][k]=='D') gx=i,gy=k;
    if (A[i][k]=='H') que.emplace(i,k),hd[i][k] = 0;
  }
  bool psf = true; auto can = [&psf,&A,&n](int x,int y){
    if (x==-1||x==n||y==-1||y==n) return false;
    if (A[x][y]=='T') return false;
    if (psf&&A[x][y]=='D') return false;
    return true;
  };
  while(!que.empty()){
    auto [i,k] = que.front(); que.pop();
    if (can(i+1,k)&&hd[i+1][k]==inf) hd[i+1][k]=hd[i][k]+m,que.emplace(i+1,k);
    if (can(i-1,k)&&hd[i-1][k]==inf) hd[i-1][k]=hd[i][k]+m,que.emplace(i-1,k);
    if (can(i,k+1)&&hd[i][k+1]==inf) hd[i][k+1]=hd[i][k]+m,que.emplace(i,k+1);
    if (can(i,k-1)&&hd[i][k-1]==inf) hd[i][k-1]=hd[i][k]+m,que.emplace(i,k-1);
  }
  psf = false; int l = -1,r = 1e9,mid;
  while(abs(l-r)>1){
    mid = (l+r)/2;
    vector dist(n,vector<int>(n,inf)); dist[sx][sy] = l,que.emplace(sx,sy);
    while(!que.empty()){
      auto [i,k] = que.front(); que.pop();
      if (can(i+1,k)&&dist[i][k]+1<hd[i+1][k]&&dist[i+1][k]==inf) dist[i+1][k] = dist[i][k]+1,que.emplace(i+1,k);
      if (can(i-1,k)&&dist[i][k]+1<hd[i-1][k]&&dist[i-1][k]==inf) dist[i-1][k] = dist[i][k]+1,que.emplace(i-1,k);
      if (can(i,k+1)&&dist[i][k]+1<hd[i][k+1]&&dist[i][k+1]==inf) dist[i][k+1] = dist[i][k]+1,que.emplace(i,k+1);
      if (can(i,k-1)&&dist[i][k]+1<hd[i][k-1]&&dist[i][k-1]==inf) dist[i][k-1] = dist[i][k]+1,que.emplace(i,k-1);
    }
    if (dist[gx][gy]==inf) r = mid;
    else l = mid;
  }
  cout << l << endl;
}

Compilation message

mecho.cpp: In function 'int main()':
mecho.cpp:38:20: warning: 'gy' may be used uninitialized in this function [-Wmaybe-uninitialized]
   38 |     if (dist[gx][gy]==inf) r = mid;
      |                    ^
mecho.cpp:38:16: warning: 'gx' may be used uninitialized in this function [-Wmaybe-uninitialized]
   38 |     if (dist[gx][gy]==inf) r = mid;
      |                ^
# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 344 KB Output isn't correct
2 Incorrect 0 ms 348 KB Output isn't correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Incorrect 0 ms 348 KB Output isn't correct
5 Incorrect 1 ms 348 KB Output isn't correct
6 Incorrect 0 ms 348 KB Output isn't correct
7 Incorrect 69 ms 11468 KB Output isn't correct
8 Incorrect 0 ms 348 KB Output isn't correct
9 Incorrect 0 ms 348 KB Output isn't correct
10 Incorrect 0 ms 348 KB Output isn't correct
11 Incorrect 0 ms 348 KB Output isn't correct
12 Incorrect 1 ms 348 KB Output isn't correct
13 Incorrect 1 ms 344 KB Output isn't correct
14 Correct 2 ms 348 KB Output is correct
15 Incorrect 0 ms 348 KB Output isn't correct
16 Incorrect 0 ms 348 KB Output isn't correct
17 Incorrect 1 ms 348 KB Output isn't correct
18 Incorrect 0 ms 348 KB Output isn't correct
19 Incorrect 1 ms 344 KB Output isn't correct
20 Incorrect 1 ms 348 KB Output isn't correct
21 Incorrect 1 ms 348 KB Output isn't correct
22 Incorrect 1 ms 348 KB Output isn't correct
23 Incorrect 1 ms 348 KB Output isn't correct
24 Incorrect 0 ms 348 KB Output isn't correct
25 Incorrect 0 ms 348 KB Output isn't correct
26 Incorrect 1 ms 348 KB Output isn't correct
27 Incorrect 1 ms 348 KB Output isn't correct
28 Incorrect 1 ms 348 KB Output isn't correct
29 Incorrect 1 ms 448 KB Output isn't correct
30 Incorrect 1 ms 604 KB Output isn't correct
31 Incorrect 1 ms 348 KB Output isn't correct
32 Incorrect 1 ms 348 KB Output isn't correct
33 Incorrect 12 ms 2724 KB Output isn't correct
34 Incorrect 11 ms 2664 KB Output isn't correct
35 Incorrect 13 ms 2924 KB Output isn't correct
36 Incorrect 15 ms 3288 KB Output isn't correct
37 Incorrect 18 ms 3288 KB Output isn't correct
38 Incorrect 17 ms 3360 KB Output isn't correct
39 Incorrect 18 ms 4092 KB Output isn't correct
40 Incorrect 20 ms 3996 KB Output isn't correct
41 Incorrect 21 ms 4036 KB Output isn't correct
42 Incorrect 29 ms 5128 KB Output isn't correct
43 Incorrect 26 ms 5140 KB Output isn't correct
44 Incorrect 25 ms 5128 KB Output isn't correct
45 Incorrect 28 ms 6004 KB Output isn't correct
46 Incorrect 27 ms 6012 KB Output isn't correct
47 Incorrect 34 ms 6048 KB Output isn't correct
48 Incorrect 33 ms 7140 KB Output isn't correct
49 Incorrect 33 ms 7080 KB Output isn't correct
50 Incorrect 36 ms 6988 KB Output isn't correct
51 Incorrect 39 ms 8192 KB Output isn't correct
52 Incorrect 38 ms 8060 KB Output isn't correct
53 Incorrect 44 ms 8272 KB Output isn't correct
54 Incorrect 45 ms 9180 KB Output isn't correct
55 Incorrect 45 ms 9320 KB Output isn't correct
56 Incorrect 51 ms 9304 KB Output isn't correct
57 Incorrect 51 ms 10504 KB Output isn't correct
58 Incorrect 51 ms 10516 KB Output isn't correct
59 Incorrect 57 ms 10560 KB Output isn't correct
60 Incorrect 62 ms 11888 KB Output isn't correct
61 Incorrect 61 ms 11892 KB Output isn't correct
62 Incorrect 66 ms 11940 KB Output isn't correct
63 Incorrect 72 ms 11928 KB Output isn't correct
64 Incorrect 77 ms 11844 KB Output isn't correct
65 Incorrect 75 ms 11840 KB Output isn't correct
66 Incorrect 72 ms 11852 KB Output isn't correct
67 Correct 300 ms 11724 KB Output is correct
68 Incorrect 69 ms 11956 KB Output isn't correct
69 Incorrect 69 ms 12176 KB Output isn't correct
70 Incorrect 75 ms 11888 KB Output isn't correct
71 Incorrect 71 ms 11932 KB Output isn't correct
72 Incorrect 69 ms 12008 KB Output isn't correct
73 Incorrect 64 ms 11984 KB Output isn't correct
74 Incorrect 73 ms 12156 KB Output isn't correct
75 Incorrect 63 ms 11972 KB Output isn't correct
76 Incorrect 64 ms 11852 KB Output isn't correct
77 Incorrect 65 ms 11988 KB Output isn't correct
78 Correct 211 ms 11808 KB Output is correct
79 Incorrect 71 ms 11856 KB Output isn't correct
80 Incorrect 65 ms 11832 KB Output isn't correct
81 Incorrect 63 ms 11828 KB Output isn't correct
82 Incorrect 63 ms 11924 KB Output isn't correct
83 Incorrect 68 ms 11920 KB Output isn't correct
84 Incorrect 71 ms 11744 KB Output isn't correct
85 Incorrect 66 ms 11872 KB Output isn't correct
86 Incorrect 65 ms 11876 KB Output isn't correct
87 Incorrect 67 ms 11924 KB Output isn't correct
88 Incorrect 66 ms 12060 KB Output isn't correct
89 Incorrect 76 ms 11920 KB Output isn't correct
90 Incorrect 67 ms 11936 KB Output isn't correct
91 Incorrect 70 ms 11816 KB Output isn't correct
92 Incorrect 66 ms 11956 KB Output isn't correct