UVa 562

#include<bits/stdc++.h>

using namespace std;

int knap(int W, int wt[], int val[], int n)
{
   int i, w;
   int K[n+1][W+1];
   for (i = 0; i <= n; i++)
   {
       for (w = 0; w <= W; w++)
       {
           if (i==0 || w==0)
               K[i][w] = 0;
           else if (wt[i-1] <= w)
                 K[i][w] = max(val[i-1] + K[i-1][w-wt[i-1]],  K[i-1][w]);
           else
                 K[i][w] = K[i-1][w];
       }
   }
 
   return K[n][W];
}

int main(){
 
 int t,n,w,d,ans,sum;
 
 while(cin>>t){
  
  while(t--){
   
   sum=0;
   cin>>n;
   int wt[100+1],val[100+1];
   memset(wt,0,101);
   memset(val,0,101);
   
   for(int i=0; i<n; i++){
    cin>>wt[i];
    val[i]=wt[i];
    sum+=wt[i];
   }
  
   w = sum/2;
   d = knap(w,wt,val,n);
   ans=sum - 2*d;
   cout<<ans<<'\n';
   
  }
 }
 
 return 0;
}

UVa 10664

#include<bits/stdc++.h>

using namespace std;

int knap(int W, int wt[], int val[], int n)
{
   int i, w;
   int K[n+1][W+1];
   for (i = 0; i <= n; i++)
   {
       for (w = 0; w <= W; w++)
       {
           if (i==0 || w==0)
               K[i][w] = 0;
           else if (wt[i-1] <= w)
                 K[i][w] = max(val[i-1] + K[i-1][w-wt[i-1]],  K[i-1][w]);
           else
                 K[i][w] = K[i-1][w];
       }
   }
 
   return K[n][W];
}


int main(){

 string n;
 int m,sum,d,w,ans;
 int wt[21],val[21];
 
  cin>>m;
  getchar();
  while(m--){
   
   
   getline(cin,n);
   int num;
   istringstream str(n);
   
   int i=0; sum=0;
   while(str >> num){
    sum+=num;
    wt[i]=val[i]=num;
    i++;
    
   }
   
  
   
   if(sum%2==1){
    cout<<"NO"<<'\n';
   }
   else {
    
    w= sum / 2;
    d= knap(w,wt,val,i);
    
    if(d==w) cout<<"YES"<<'\n';
    else cout<<"NO"<<'\n';

   }
   
   }

 return 0;
}

UVa 12555

#include<bits/stdc++.h>

using namespace std;

int main()
{
 int t,sz,a;
 int kase=1;
 double res;
 string inp;

 cin>>t;

 while(t--){
  
  res=0;
  cin>>a;
  cin>>inp;
  
  sz=inp.size();
  
  if(sz <= 4) res = a * .5;
  else res = (inp[3]-'0') * .05 + a * .5;
  
  cout<<"Case "<<kase<<": ";
  cout<<res<<endl;
  kase++;

 }

 return 0;

}

//translation chinese to english :D
//.5kg =  jin 
//.05 = two
// so "5 jin 2 two" consider it :)