摘要:
p3405 // made by Arc on 2021/2/8 //Luogu p3405 #include<bits/stdc++.h> using namespace std; map<int,int>mmp[100008]; int n,ans; int main() { cin>>n; f 阅读全文
摘要:
leetcode打卡 题面 class Solution { public: bool checkPossibility(vector<int> &nums) { int n = nums.size(); for (int i = 0; i < n - 1; ++i) { int x = nums[ 阅读全文