/in/foo.cc:8:62: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
 int murakumo1[70][70],murakumo2[70][3610][70],m,n,k,ans=1<<31-1;
                                                            ~~^~
/in/foo.cc: In function 'int main()':
/in/foo.cc:17:27: error: 'min' was not declared in this scope
   for(int j=0;j<=min(k,i*m);++j)
                           ^
/in/foo.cc:21:54: error: 'min' was not declared in this scope
  for(int i=0;i<=n;++i) ans=min(ans,murakumo2[n][k][i]);
                                                      ^