题目链接:https://codeforces.com/contest/1114/problem/C 题目大意…
标签:数论
Math ( 思维/数论 )
题目链接:https://codeforces.com/contest/1062/problem/B 题目大意…
Fear Factoring Gym – 101615C(约数和,分块除法模板)
题目链接:https://cn.vjudge.net/problem/Gym-101615C 题目大意:求l到…
Professor Agasa Lab Gym – 101778C(线性欧拉筛模板)
题目链接:https://cn.vjudge.net/problem/Gym-101778C 题目大意:1 ≤…