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coinChange.cpp
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coinChange.cpp
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#include <bits/stdc++.h>
using namespace std;
int waysCoinChangeHelperRec(vector<int> &arr, int s, int n)
{
if (s < 0)
return 0;
if (n == 0)
return 0;
if (s == 0)
return 1;
return waysCoinChangeHelperRec(arr,s-arr[n-1],n) + waysCoinChangeHelperRec(arr,s,n-1);
}
int waysCoinChangeHelperTd(vector<int> &arr, vector<vector<int>>&dp, int s, int n)
{
if (s<0)
return 0;
if (n==0)
return 0;
if (s==0)
return 1;
if (dp[s][n]!=-1)
return dp[s][n];
return (dp[s][n] = waysCoinChangeHelperTd(arr,dp,s-arr[n-1],n) + waysCoinChangeHelperTd(arr,dp,s,n-1));
}
int waysCoinChange(vector<int> &arr, int s)
{
int size = arr.size();
vector<vector<int>> dp(size+1, vector<int>(s+1,-1));
//return waysCoinChangeHelperRec(arr,s,arr.size());
return waysCoinChangeHelperTd(arr,dp,s,arr.size());
}
int main()
{
int t;cin>>t;
int size, qc,q;
vector<int> arr;
while (t--)
{
arr.clear();
cin>>size;
arr.resize(size);
for(int i=0;i<size;i++)
cin>>arr[i];
cin>>qc;
while(qc--)
{
cin>>q;
cout << waysCoinChange(arr,q) << " ";
}
cout << endl;
}
return 0;
}