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  1. #include <bits/stdc++.h>
  2. #define pb push_back
  3. #define mp make_pair
  4. using namespace std;
  5. typedef long long ll;
  6. ll n,k,*arr,m,**dp;
  7. ll foo(ll s,ll c){
  8.     if(s>=n){return INT_MAX;}
  9.     //if(c==m){return m*k;}
  10.     if(c>=m){return -1;}
  11.     if(dp[s][c]!=-1){return dp[s][c];}
  12.     if(arr[s]==1){
  13.             if(c==0){return dp[s][c]=1+min(foo(s+1,c+1),foo(s+1,c));}
  14.             return dp[s][c]=min(c*k+foo(s+1,c+1),c*k+foo(s+1,c));
  15.     }
  16.     else{
  17.         if(c==0){return dp[s][c]=1+foo(s+1,c);}
  18.         else{return dp[s][c]=c*k+foo(s+1,c);}
  19.     }
  20. }
  21. int main() {
  22.     ll cnt=0,a1,a2;
  23.     cin>>n>>m>>k;
  24.     dp=(ll **)malloc(n * sizeof(ll *));
  25.     for(a1=0;a1<n;++a1){
  26.         dp[a1]=(ll *)malloc(sizeof(ll)*m);
  27.     }
  28.     for(a1=0;a1<n;++a1){
  29.         for(a2=0;a2<m;++a2){
  30.             dp[a1][a2]=-1;
  31.         }
  32.     }
  33.     arr=(ll *)malloc(n*sizeof(ll));
  34.     for(a1=0;a1<n;++a1){
  35.         cin>>arr[a1];
  36.         if(arr[a1]==1){++cnt;}
  37.     }
  38.     if(cnt<m){cout<<-1;return 0;}
  39. 	cout<<foo(0,0);
  40. 	return 0;
  41. }
  42.  
Success #stdin #stdout 0s 16064KB
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https://ideone.com/NmY3sc
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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