/in/foo.cc: In function 'int main()':
/in/foo.cc:19:13: error: redeclaration of 'int Salenum'
     int i=0,Salenum=priceAndSalenum[1];
             ^~~~~~~
/in/foo.cc:7:31: note: 'int Salenum' previously declared here
     int priceGovernment,price,Salenum,cutPerYuan;
                               ^~~~~~~
/in/foo.cc:10:30: warning: unused variable 'maxProfitPrice' [-Wunused-variable]
     int maxProfit=0,profit=0,maxProfitPrice=0;
                              ^~~~~~~~~~~~~~