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#include <iostream> using namespace std; int n; int y; int niza[100]; int dp[10000000]; const int MOD = 1e9 + 7; int c(int y1){ if(y1==0){ return 1; } if(dp[y1]!=-1){ return dp[y1]; } int result=0; for(int i=0; i<n; i++){ if(y1-niza[i]>=0){ result+=c(y1-niza[i]); result %= MOD; } } return dp[y1]=result; } int main() { cin>>n; cin>>y; for(int i=0; i<=y; i++){ dp[i]=-1; } for(int i=0; i<n; i++){ cin>>niza[i]; } cout<<c(y); }
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