一直努力

大数加法板子（函数） #include<stdio.h> #include<string.h> #include <iostream> using namespace std; string sum(string s1,string s2){ if(s1.length()<s2.length()){ string temp=s1; ...

Easy Summation You are encountered with a traditional problem concerning the sums of powers. Given two integers n and k. Let f(i)=ik, please evaluate the sum f(1)+f(2)+…+f(n). The problem is simple as...