B. Email from Polycarp 题目链接:http://codeforces.com/contest/1185/problem/B 题目: Methodius received an email from his friend Polycarp. However, Polycarp's keyboard is broken, so pressing a key on it once may cause the corresponding symbol to appear more…
A. Ropewalkers 题目链接:http://codeforces.com/contest/1185/problem/A 题目: Polycarp decided to relax on his weekend and visited to the performance of famous ropewalkers: Agafon, Boniface and Konrad. The rope is straight and infinite in both directions. At…
有点菜,只写出了三道.活不多说,上题开干. A. Ropewalkers Polycarp decided to relax on his weekend and visited to the performance of famous ropewalkers: Agafon, Boniface and Konrad. The rope is straight and infinite in both directions. At the beginning of the performance…
链接: https://codeforces.com/contest/1185/problem/D 题意: A sequence a1,a2,-,ak is called an arithmetic progression if for each i from 1 to k elements satisfy the condition ai=a1+c⋅(i−1) for some fixed c. For example, these five sequences are arithmetic…
链接: https://codeforces.com/contest/1185/problem/C2 题意: The only difference between easy and hard versions is constraints. If you write a solution in Python, then prefer to send it in PyPy to speed up execution time. A session has begun at Beland Stat…
链接: https://codeforces.com/contest/1185/problem/B 题意: Methodius received an email from his friend Polycarp. However, Polycarp's keyboard is broken, so pressing a key on it once may cause the corresponding symbol to appear more than once (if you press…
链接: https://codeforces.com/contest/1185/problem/A 题意: Polycarp decided to relax on his weekend and visited to the performance of famous ropewalkers: Agafon, Boniface and Konrad. The rope is straight and infinite in both directions. At the beginning o…
因为不会打公式,随意就先将就一下? #include<cstdio> #include<algorithm> #include<iostream> #include<cstring> #include<vector> using namespace std; typedef long long LL; ; ; int add (int x,int y) {x=x+y;return x>=MOD?x-MOD:x;} int mul (int…
