继续努力，一天更比一天好

#include <iostream> using namespace std; int n,i,x1,x2; int k=0; int main() {     cin>>n;     do     {         cin>>x1>>x2;             if(90<=x1<=140&&60<=x2<=90)         {             k+=1;         }         i++;     }     while(i<n);     cout<<...