就第2个点对了 有点乱而且还不会写switch

#include<bits/stdc++.h>
using namespace std;
int main(){
	int a[10];
	for(int i=0;i<9;i++){
		cin>>a[i];
	}
	for(int i=0;i<9;i++){
		for(int j=0;j<9;j++){
			for(int k=0;k<9;k++){
				if(a[i]==3&&i%2!=0&&a[j]==5&&j%2!=0&&a[k]==7&&k%2!=0){
					cout<<"xiaoa wins.";
					return 0;
				}
				else if(a[i]==1&&i%2!=0&&a[j]==5&&j%2!=0&&a[k]==9&&k%2!=0){
					cout<<"xiaoa wins.";
					return 0;
				}
				else if(a[i]==1&&i%2!=0&&a[j]==2&&j%2!=0&&a[k]==3&&k%2!=0){
					cout<<"xiaoa wins.";
					return 0;
				}
				else if(a[i]==4&&i%2!=0&&a[j]==5&&j%2!=0&&a[k]==6&&k%2!=0){
					cout<<"xiaoa wins.";
					return 0;
				}
				else if(a[i]==7&&i%2!=0&&a[j]==8&&j%2!=0&&a[k]==9&&k%2!=0){
					cout<<"xiaoa wins.";
					return 0;
				}
				else if(a[i]==1&&i%2!=0&&a[j]==4&&j%2!=0&&a[k]==7&&k%2!=0){
					cout<<"xiaoa wins.";
					return 0;
				}
				else if(a[i]==2&&i%2!=0&&a[j]==5&&j%2!=0&&a[k]==8&&k%2!=0){
					cout<<"xiaoa wins.";
					return 0;
				}
				else if(a[i]==3&&i%2!=0&&a[j]==6&&j%2!=0&&a[k]==9&&k%2!=0){
					cout<<"xiaoa wins.";
					return 0;
				}
				else if(a[i]==1&&i%2==0&&a[j]==5&&j%2==0&&a[k]==9&&k%2==0){
					cout<<"uim wins.";
					return 0;
				}
				else if(a[i]==1&&i%2==0&&a[j]==2&&j%2==0&&a[k]==3&&k%2==0){
					cout<<"uim wins.";
					return 0;
				}
				else if(a[i]==4&&i%2==0&&a[j]==5&&j%2==0&&a[k]==6&&k%2==0){
					cout<<"uim wins.";
					return 0;
				}
				else if(a[i]==7&&i%2==0&&a[j]==8&&j%2==0&&a[k]==9&&k%2==0){
					cout<<"uim wins.";
					return 0;
				}
				else if(a[i]==1&&i%2==0&&a[j]==4&&j%2==0&&a[k]==7&&k%2==0){
					cout<<"uim wins.";
					return 0;
				}
				else if(a[i]==2&&i%2==0&&a[j]==5&&j%2==0&&a[k]==8&&k%2==0){
					cout<<"uim wins.";
					return 0;
				}
				else if(a[i]==3&&i%2==0&&a[j]==6&&j%2==0&&a[k]==9&&k%2==0){
					cout<<"uim wins.";
					return 0;
				}
			}
		}
	}
	cout<<"drew.";
	return 0;
}