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답안 #254406

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
254406 2020-07-30T00:18:19 Z oscarsierra12 Mecho (IOI09_mecho) C++14
95 / 100
 253 ms 12408 KB 
#include<bits/stdc++.h>
using namespace std ;
 
const int N = 1000 ;
 
string ma[N] ;
int dist[N][N], dist2[N][N] ;
int X [] = {0,0,-1,1}, Y[] = {1,-1,0,0} ;
int visi[N][N] ;
int main() {
   int n, s ;
   cin >> n >> s ;
   for ( int i = 0 ; i < n ; ++i ) cin >> ma[i] ;
   queue <pair<int,int>> bfs ;
   pair<int,int> bg, en ;
   for ( int i = 0 ; i < n ; ++i ) {
      for ( int j = 0 ;  j < n ; ++j ) {
          if ( ma[i][j] == 'H' ) bfs.push({i,j}), dist2[i][j] = 0, visi[i][j] = 1 ;
          if ( ma[i][j] == 'T'  ) visi[i][j] = 1 ;
          if ( ma[i][j] == 'M' ) bg = {i,j} ;
          if ( ma[i][j] == 'D' ) en = {i,j} ;
      }
   }
   while ( bfs.size() ) {
      pair<int,int> cur = bfs.front() ;
      bfs.pop() ;
      for ( int k = 0 ; k < 4 ; ++k ) {
         int nwx = X[k] + cur.first ;
         int nwy = Y[k] + cur.second ;
         if ( nwx < 0 || nwy < 0 || nwx >= n || nwy >= n || visi[nwx][nwy] ) continue ;
         visi[nwx][nwy] = 1 ;
         dist2[nwx][nwy] = 1 + dist2[cur.first][cur.second] ;
         bfs.push({nwx, nwy}) ; 
      }
   }
   int lw = 0, hg = 1000000000 ; 
   while ( lw <= hg ) {
      int mid = (lw+hg) / 2 ;
      memset ( visi, 0, sizeof visi ) ; 
      memset ( dist, 0, sizeof dist ) ; 
      if ( mid < dist2[bg.first][bg.second] ) bfs.push(bg) ;
      visi[bg.first][bg.second] = 1 ;
      while ( bfs.size() ) {
          pair<int,int> cur = bfs.front() ;
          bfs.pop() ;
          for ( int k = 0 ; k < 4 ; ++k ) {
             int nwx = X[k] + cur.first ;
             int nwy = Y[k] + cur.second ;
             if ( nwx < 0 || nwy < 0 || nwx >= n || nwy >= n || visi[nwx][nwy] || ma[nwx][nwy] == 'T' ) continue ;
             if ( (nwx != en.first || nwy != en.second) && (1 + dist[cur.first][cur.second]) / s + mid >= dist2[nwx][nwy] ) continue ;
             visi[nwx][nwy] = 1 ;
             dist[nwx][nwy] = 1 + dist[cur.first][cur.second] ;
             bfs.push({nwx, nwy}) ; 
          }
      }
      if ( visi[en.first][en.second] ) lw = mid+1 ;
      else hg = mid-1 ;
   }
   cout << hg << endl ;
}

Subtask #1
95.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 30 ms 8192 KB Output is correct
2 Correct 22 ms 8192 KB Output is correct
3 Correct 18 ms 8192 KB Output is correct
4 Correct 19 ms 8192 KB Output is correct
5 Correct 18 ms 8192 KB Output is correct
6 Correct 30 ms 8192 KB Output is correct
7 Correct 133 ms 12280 KB Output is correct
8 Correct 18 ms 8192 KB Output is correct
9 Correct 19 ms 8192 KB Output is correct
10 Correct 18 ms 8192 KB Output is correct
11 Correct 18 ms 8192 KB Output is correct
12 Incorrect 18 ms 8448 KB Output isn't correct
13 Correct 30 ms 8320 KB Output is correct
14 Correct 22 ms 8448 KB Output is correct
15 Correct 19 ms 8192 KB Output is correct
16 Correct 23 ms 8192 KB Output is correct
17 Correct 25 ms 8320 KB Output is correct
18 Correct 20 ms 8320 KB Output is correct
19 Correct 19 ms 8320 KB Output is correct
20 Correct 22 ms 8320 KB Output is correct
21 Correct 20 ms 8320 KB Output is correct
22 Correct 20 ms 8320 KB Output is correct
23 Correct 22 ms 8424 KB Output is correct
24 Correct 18 ms 8320 KB Output is correct
25 Correct 19 ms 8448 KB Output is correct
26 Correct 19 ms 8448 KB Output is correct
27 Correct 21 ms 8448 KB Output is correct
28 Correct 20 ms 8448 KB Output is correct
29 Correct 31 ms 8448 KB Output is correct
30 Correct 20 ms 8448 KB Output is correct
31 Correct 21 ms 8448 KB Output is correct
32 Correct 28 ms 8448 KB Output is correct
33 Correct 39 ms 9848 KB Output is correct
34 Correct 28 ms 9728 KB Output is correct
35 Correct 60 ms 9728 KB Output is correct
36 Correct 39 ms 9976 KB Output is correct
37 Correct 37 ms 9984 KB Output is correct
38 Correct 71 ms 9984 KB Output is correct
39 Correct 35 ms 10112 KB Output is correct
40 Correct 60 ms 10112 KB Output is correct
41 Correct 63 ms 10112 KB Output is correct
42 Correct 62 ms 10624 KB Output is correct
43 Correct 35 ms 10624 KB Output is correct
44 Correct 108 ms 10620 KB Output is correct
45 Correct 38 ms 10872 KB Output is correct
46 Correct 47 ms 10880 KB Output is correct
47 Correct 98 ms 10872 KB Output is correct
48 Correct 43 ms 11136 KB Output is correct
49 Correct 44 ms 11136 KB Output is correct
50 Correct 120 ms 11256 KB Output is correct
51 Correct 46 ms 11392 KB Output is correct
52 Correct 48 ms 11388 KB Output is correct
53 Correct 127 ms 11384 KB Output is correct
54 Correct 54 ms 11512 KB Output is correct
55 Correct 64 ms 11512 KB Output is correct
56 Correct 153 ms 11640 KB Output is correct
57 Correct 55 ms 11768 KB Output is correct
58 Correct 62 ms 11768 KB Output is correct
59 Correct 164 ms 11916 KB Output is correct
60 Correct 63 ms 12024 KB Output is correct
61 Correct 60 ms 12024 KB Output is correct
62 Correct 197 ms 12024 KB Output is correct
63 Correct 153 ms 12152 KB Output is correct
64 Correct 253 ms 12024 KB Output is correct
65 Correct 244 ms 12024 KB Output is correct
66 Correct 174 ms 12152 KB Output is correct
67 Correct 165 ms 12024 KB Output is correct
68 Correct 104 ms 12152 KB Output is correct
69 Correct 98 ms 12152 KB Output is correct
70 Correct 73 ms 12024 KB Output is correct
71 Correct 82 ms 12024 KB Output is correct
72 Correct 76 ms 12152 KB Output is correct
73 Correct 93 ms 12284 KB Output is correct
74 Correct 118 ms 12408 KB Output is correct
75 Correct 124 ms 12280 KB Output is correct
76 Correct 114 ms 12312 KB Output is correct
77 Correct 124 ms 12280 KB Output is correct
78 Correct 116 ms 12408 KB Output is correct
79 Correct 100 ms 12376 KB Output is correct
80 Correct 105 ms 12280 KB Output is correct
81 Correct 113 ms 12280 KB Output is correct
82 Correct 102 ms 12280 KB Output is correct
83 Correct 127 ms 12408 KB Output is correct
84 Correct 118 ms 12280 KB Output is correct
85 Correct 121 ms 12280 KB Output is correct
86 Correct 125 ms 12280 KB Output is correct
87 Correct 122 ms 12280 KB Output is correct
88 Correct 139 ms 12280 KB Output is correct
89 Correct 136 ms 12284 KB Output is correct
90 Correct 148 ms 12280 KB Output is correct
91 Correct 138 ms 12280 KB Output is correct
92 Correct 139 ms 12280 KB Output is correct