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…
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…
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…
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…
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…
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…
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…
