今天心情不好，就做一道

class Solution {
public:int countTarget(vector<int>& scores, int target) {return help(scores,target)-help(scores,target-1);}int help(vector<int>&scores,int target){int left = 0;int right = scores.size()-1;while(left <= right){int mid = (left+right)/2;if(scores[mid] <= target) left=mid+1;else right = mid-1;}return left;}
};