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  1. #include <bits/stdc++.h>
  2. #define ll long long
  3. #define F first
  4. #define S second
  5. #define pll pair<long long, long long>
  6. #define pii pair<int, int>
  7. #define mii map <int , int>
  8. #define mll map <long long ,long long>
  9. #define vi vector <int>
  10. #define vl vector <long long>
  11. #define pb push_back
  12. #define IOS ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  13. #define cmp greater<int>()
  14. #define RF(F) freopen(F , "r" , stdin ) 
  15. #define WF(F) freopen(F , "w" , stdout) 
  16. using namespace std;
  17.  
  18. const ll INF = 1e9 ;
  19. const int N = 500 + 7 ;
  20. const int mod = 1e9 + 7;
  21. int mem[N][N] ;
  22.  
  23. string get_string() {
  24.  
  25.     const int N = 2e5 + 7 ;
  26.     char s[N] ;
  27.  
  28.     scanf("%s" , s) ;
  29.  
  30.     return s ;
  31. }
  32.  
  33. void init() {
  34.     memset(mem , -1 , sizeof mem) ;
  35. }
  36.  
  37. int dp(int n , int m){
  38.  
  39.     if(n == m)return 0 ;
  40.  
  41.     if(m == 1)return n - 1 ; 
  42.  
  43.     if(n == 1)return m - 1 ;
  44.  
  45.     if(mem[n][m] != -1)return mem[n][m] ;
  46.  
  47.     int ans = INF ;
  48.  
  49.     for(int i = 1 ; i <= (n / 2) ; i ++){
  50.         ans = min(ans , 1 + dp(i , m) + dp(n - i , m)) ;
  51.     }
  52.     for(int j = 1 ; j <= (m / 2) ; j ++){
  53.         ans = min(ans , 1 + dp(n , j) + dp(n , m - j)) ;
  54.     }
  55.  
  56.     return mem[n][m] = ans ;
  57. }
  58.  
  59. void solve(int testCase){
  60.  
  61.     int n , m ;
  62.     scanf("%d %d" , &n , &m) ;
  63.  
  64.     printf("%d" , dp(n , m)) ;
  65. }
  66.  
  67. int main() {
  68.  
  69.     int testCase = 1;
  70.  
  71.     //scanf("%d", &testCase);
  72.  
  73.     while (testCase--){
  74.         init();
  75.         solve(testCase);
  76.     }
  77.  
  78.     return 0;
  79. }
Runtime error #stdin #stdout 0.01s 5316KB
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https://ideone.com/0IGOww
language:
C++14 (clang 8.0)
created:
1 year ago
visibility:
secret

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