A Simple Math Problem(HDU 1757 构造矩阵) If x < 10 f(x) = x.If x >= 10 f(x) = a0 * f(x-1) + a1 * f(x-2) + a2 * f(x-3) + …… + a9 * f(x-10);And ai(0<=i<=9) can only be 0 or 1 . Sample Input...
Lele now is thinking about a simple function f(x). If x < 10 f(x) = x. If x >= 10 f(x) = a0 * f(x-1) + a1 * f(x-2) + a2 * f(x-3) + …… + a9 * f(x-10); And ai(0<=i<=9) can only be 0 or 1 . Now, I will give a0 ~ a9 and two positive inte...
A Simple Math Problem 题目大意 输入描述 输出描述 样例 输入 3 输出 5 推导 #include<bits/stdc++.h> using namespace std; const int maxn = 1e6+1; int prime[maxn], mu[maxn], phi[maxn], tot; bool vis[maxn]; int f[maxn]; void get_pmp(int n) { vis[1] = mu[1] = phi...
而已知x+y=ax+y=a 则可以推出x和y 代码 #include<bits/stdc++.h>#definefi first#definese second#definedebug cout<<"I AM HERE"<<endl;usingnamespacestd;typedeflonglongll;typedefpair<int,int> pii;constintmaxn=1e2+5,inf=0x3f3f3f3f,mod=1e9+7;constinteps=1e-3;inta,b;signedmain(){wh...
// Problem: A Simple Math Problem // Contest: NowCoder // URL: https://ac.nowcoder.com/acm/contest/8827/A // Memory Limit: 256 MB // Time Limit: 2000 ms // Created by Herio #include <bits/stdc++.h> using namespace std; typedef long long ll; const int N = 2e5 + 5; ...
HDU - 5974 A Simple Math Problem (数论解方程) Given two positive integers a and b,find suitable X and Y to meet the conditions: X+Y=a Least Common Multiple (X, Y) =b Input Input includes multiple sets of test data.Each test data occupies one line,including two positive integers a(...
#include<math.h> usingnamespacestd; intgcd(intx,inty) { if(y==0) returnx; else returngcd(y,x%y); } intmain() { inta,b,temp,k,d; while(cin>>a>>b) { temp=gcd(a,b); b*=temp; k=a*a-4*b; d=sqrt(k); if(k<0||d*d!=k||(a+d)%2!=0) ...
HDU1757:A Simple Math Problem(矩阵快速幂) Problem Description Lele now is thinking about a simple function f(x). If x < 10 f(x) = x. If x >= 10 f(x) = a0 * f(x-1) + a1 * f(x-2) + a2 * f(x-3) + …… + a9 * f(x-10);...
A Simple Math Problem HDU - 5974(数论,gcd相关的公式推导,好题),题意:A=X+Y且X与Y的最小公倍数是B,已知A、B,求X、Y。题解:参考博客先说几个才知道的性质性质1:如果k1,k2互质,则k1+k2与k1*k2也是互质的(具体证明可以点击上面的博客,用的是反正法)。对于本题其
百度试题 结果1 题目1. It is a simple (简单的) math problem and everyone of us can work it out. 相关知识点: 试题来源: 解析 答案见上 反馈 收藏