摘要： #include <iostream>#include<fstream>#include<cstring>using namespace std;ifstream infile;ofstream outfile;long long dp[40][800];int n,sum;int main(){ infile.open("subset.in"); outfile.open("subset.out"); infile>>n; //cin>>n; sum = (n+1)*n/2; if(sum % 阅读全文