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Submission #204146

# Submission time Handle Problem Language Result Execution time Memory
204146 2020-02-24T16:01:00 Z Kalam Luxury burrow (IZhO13_burrow) C++11
100 / 100
 587 ms 18568 KB 
// KALAM
# include<bits/stdc++.h>

using namespace std;

const int N = 1000 + 77;
int n , m , k , a[N][N] , b[N][N] , c[N] , L[N] , R[N];
inline int Solve() {
   int res = 0;
   for(int i = 1;i <= m;++ i) {
      L[i] = i - 1;
      while(c[L[i]] >= c[i] && L[i] > 0)
         L[i] = L[L[i]];
   }
   for(int i = m;i > 0;-- i) {
      R[i] = i + 1;
      while(c[R[i]] >= c[i] && R[i] <= m)
         R[i] = R[R[i]];
      res = max(res , (R[i] - L[i] - 1) * c[i]);
   }
   return res;
}
inline int Check(int t) {
   int res = 0;
   for(int i = 1;i <= n;++ i) {
      for(int j = 1;j <= m;++ j)
         b[i][j] = (a[i][j] >= t ? 1 + b[i - 1][j] : 0);
      for(int j = 1;j <= m;++ j)
         c[j] = b[i][j];
      res = max(res , Solve());
   }
   return res;
}
int main() {
   scanf("%d %d %d" , & n , & m , & k);
   for(int i = 1;i <= n;++ i)
      for(int j = 1;j <= m;++ j)
         scanf("%d" , & a[i][j]);

   int le = 1 , ri = 1000000001;
   while(ri - le > 1) {
      int mid = ((le + ri) >> 1);
      if(Check(mid) >= k)
         le = mid;
      else
         ri = mid;
   }
   printf("%d %d\n" , le , Check(le));
   return 0;
}

Compilation message

burrow.cpp: In function 'int main()':
burrow.cpp:35:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d %d %d" , & n , & m , & k);
    ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
burrow.cpp:38:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
          scanf("%d" , & a[i][j]);
          ~~~~~^~~~~~~~~~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 504 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 6 ms 632 KB Output is correct
6 Correct 6 ms 632 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 10 ms 1144 KB Output is correct
9 Correct 14 ms 2168 KB Output is correct
10 Correct 31 ms 2296 KB Output is correct
11 Correct 52 ms 3064 KB Output is correct
12 Correct 32 ms 4600 KB Output is correct
13 Correct 38 ms 1528 KB Output is correct
14 Correct 88 ms 4344 KB Output is correct
15 Correct 93 ms 4344 KB Output is correct
16 Correct 93 ms 4856 KB Output is correct
17 Correct 103 ms 5112 KB Output is correct
18 Correct 238 ms 8184 KB Output is correct
19 Correct 273 ms 8184 KB Output is correct
20 Correct 518 ms 12792 KB Output is correct
21 Correct 465 ms 14328 KB Output is correct
22 Correct 584 ms 18568 KB Output is correct
23 Correct 587 ms 18552 KB Output is correct
24 Correct 399 ms 11256 KB Output is correct
25 Correct 425 ms 11768 KB Output is correct