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답안 #254409

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
254409 2020-07-30T00:21:54 Z oscarsierra12 Mecho (IOI09_mecho) C++14
95 / 100
 234 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 = 2000000000 ; 
   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 25 ms 8192 KB Output is correct
2 Correct 26 ms 8192 KB Output is correct
3 Correct 24 ms 8192 KB Output is correct
4 Correct 25 ms 8192 KB Output is correct
5 Correct 20 ms 8192 KB Output is correct
6 Correct 27 ms 8312 KB Output is correct
7 Correct 132 ms 12152 KB Output is correct
8 Correct 18 ms 8192 KB Output is correct
9 Correct 21 ms 8192 KB Output is correct
10 Correct 19 ms 8192 KB Output is correct
11 Correct 23 ms 8192 KB Output is correct
12 Incorrect 18 ms 8448 KB Output isn't correct
13 Correct 27 ms 8320 KB Output is correct
14 Correct 34 ms 8448 KB Output is correct
15 Correct 19 ms 8192 KB Output is correct
16 Correct 26 ms 8192 KB Output is correct
17 Correct 20 ms 8320 KB Output is correct
18 Correct 26 ms 8320 KB Output is correct
19 Correct 19 ms 8320 KB Output is correct
20 Correct 26 ms 8320 KB Output is correct
21 Correct 27 ms 8320 KB Output is correct
22 Correct 20 ms 8448 KB Output is correct
23 Correct 24 ms 8320 KB Output is correct
24 Correct 19 ms 8320 KB Output is correct
25 Correct 20 ms 8448 KB Output is correct
26 Correct 19 ms 8448 KB Output is correct
27 Correct 19 ms 8448 KB Output is correct
28 Correct 25 ms 8448 KB Output is correct
29 Correct 19 ms 8448 KB Output is correct
30 Correct 26 ms 8448 KB Output is correct
31 Correct 20 ms 8448 KB Output is correct
32 Correct 26 ms 8448 KB Output is correct
33 Correct 28 ms 9728 KB Output is correct
34 Correct 29 ms 9728 KB Output is correct
35 Correct 53 ms 9776 KB Output is correct
36 Correct 31 ms 9984 KB Output is correct
37 Correct 30 ms 9984 KB Output is correct
38 Correct 53 ms 9984 KB Output is correct
39 Correct 33 ms 10112 KB Output is correct
40 Correct 42 ms 10104 KB Output is correct
41 Correct 71 ms 10212 KB Output is correct
42 Correct 35 ms 10616 KB Output is correct
43 Correct 36 ms 10616 KB Output is correct
44 Correct 97 ms 10624 KB Output is correct
45 Correct 38 ms 10872 KB Output is correct
46 Correct 41 ms 10872 KB Output is correct
47 Correct 114 ms 10872 KB Output is correct
48 Correct 48 ms 11148 KB Output is correct
49 Correct 53 ms 11136 KB Output is correct
50 Correct 133 ms 11256 KB Output is correct
51 Correct 49 ms 11388 KB Output is correct
52 Correct 59 ms 11384 KB Output is correct
53 Correct 151 ms 11384 KB Output is correct
54 Correct 54 ms 11516 KB Output is correct
55 Correct 54 ms 11512 KB Output is correct
56 Correct 158 ms 11640 KB Output is correct
57 Correct 65 ms 11772 KB Output is correct
58 Correct 62 ms 11768 KB Output is correct
59 Correct 178 ms 11768 KB Output is correct
60 Correct 67 ms 12024 KB Output is correct
61 Correct 72 ms 12152 KB Output is correct
62 Correct 208 ms 12024 KB Output is correct
63 Correct 177 ms 12024 KB Output is correct
64 Correct 234 ms 12152 KB Output is correct
65 Correct 225 ms 12024 KB Output is correct
66 Correct 170 ms 12120 KB Output is correct
67 Correct 155 ms 12024 KB Output is correct
68 Correct 97 ms 12200 KB Output is correct
69 Correct 90 ms 12152 KB Output is correct
70 Correct 73 ms 12152 KB Output is correct
71 Correct 79 ms 12024 KB Output is correct
72 Correct 72 ms 12152 KB Output is correct
73 Correct 85 ms 12304 KB Output is correct
74 Correct 130 ms 12280 KB Output is correct
75 Correct 138 ms 12280 KB Output is correct
76 Correct 115 ms 12408 KB Output is correct
77 Correct 129 ms 12408 KB Output is correct
78 Correct 130 ms 12280 KB Output is correct
79 Correct 125 ms 12280 KB Output is correct
80 Correct 121 ms 12408 KB Output is correct
81 Correct 120 ms 12280 KB Output is correct
82 Correct 100 ms 12280 KB Output is correct
83 Correct 137 ms 12408 KB Output is correct
84 Correct 126 ms 12408 KB Output is correct
85 Correct 141 ms 12280 KB Output is correct
86 Correct 134 ms 12280 KB Output is correct
87 Correct 119 ms 12280 KB Output is correct
88 Correct 135 ms 12408 KB Output is correct
89 Correct 148 ms 12280 KB Output is correct
90 Correct 138 ms 12280 KB Output is correct
91 Correct 150 ms 12280 KB Output is correct
92 Correct 145 ms 12280 KB Output is correct