#include <iostream> #include <vector> #include <algorithm> using namespace std; bool comp(int a,int b){ return a>b; } int main() { int n,x,a,b; while(cin>>n){ int res = 0; vector<int> vec; while(n--){ cin>>x; vec.push_back(x); } // 收集完毕 while(vec.size()>1){ ...