不会的看我 只有两行

#include<bits/stdc++.h>
using namespace std;struct studet{string name;int x;}a[15];bool cmp(studet a,studet b){return a.x>b.x;}int main(){int n;cin>>n;for(int i=0;i<n;i++){cin>>a[i].name>>a[i].x;}sort(a,a+n,cmp);for(int i=0;i<n;i++){cout<<a[i].name<<" "<<a[i].x<<endl;}return 0;}