2020.12.14vj补题

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A. Lucky Ticket 题意:就是说4与7是幸运数字,用4和7组成的数字也是幸运数字,问所给数字是不是幸运数字思路:直接敲代码: 1 #include<iostream> 2 #include<cstdio> 3 #include<cmath> 4 #include<cstring> 5 #include<algorithm> 6 using namespace std; 7 int main(){ 8 int n; 9 scanf(…

2020.12.20vj补题

A - Insomnia cure 题意:一共s只龙,每隔k,l,m,n只龙就会受伤,问这s只龙有多少龙是受伤的思路:看起来题目范围并不是很多,直接进行循环判断代码: 1 #include<iostream> 2 #include<cstdio> 3 #include<cmath> 4 #include<cstring> 5 #include<algorithm> 6 using namespace std; 7 int main(){ 8…

2020 wannafly camp 补题 day1

题目可以从牛客上找到. 最简单的一个题应该是B B. 密码学这个应该就是倒着推,题目给了你加密的顺序,所以我们逆推这个就可以得到每一次加密前的字符串. 1H. 最大公约数题目大意就是给你一个范围1~n 满足gcd(k,y) 是独一无二的,意思是除了k之外,1~n中没有gcd(i,y)==gcd(k,y) 这个题目首先要知道gcd(k,y)==k,因为如果等于x,且x<k,那么因为x属于1~n,所以gcd(x,y)==x 这样就不满足题目要求了. 所以y一定是k的倍数,因为在这n个数中,可能有…

2020.1.30--vj补题

C - C CodeForces - 991C 题目内容: After passing a test, Vasya got himself a box of n candies. He decided to eat an equal amount of candies each morning until there are no more candies. However, Petya also noticed the box and decided to get some candies f…

2020.11.6-vj补题

A - A CodeForces - 136A 题解:按输入的顺序输出对应的下标即可,定义一个数组,将输入的作为下标,下标为值,最后依次输出即可: #include<bits/stdc++.h> using namespace std; int main() { int n; cin>>n; int s[n+5],i,a; for(i=1;i<=n;i++) { cin>>a; s[a]=i; } for(i=1;i<=n;i++) { if(i==1)co…

【补题记录】ZJU-ICPC Summer Training 2020 部分补题记录

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