Math Problem

题解：
数学推导的问题，暴力明显不行那就猜结论

#include<algorithm>
#include<cstdio>
#include<cmath>
#include<iostream>
#include<cstring>
#include<set>
#include<map>
#include<iterator>
#include<queue>
#include<vector>
#include<string>
using namespace std;typedef long long ll;
const int N=1e6+10;
const long long INF=1e18;
const double eps=0.0000001;
int a[N];
char b[100][100];int main()
{ios::sync_with_stdio(false);cin.tie(0);ll n=0,m=0,r,ans,one=0,two=0;ll x,y,z,t,l;scanf("%lld",&t);ll s=0,sum;while(t--){scanf("%lld%lld",&l,&r);if((l-1)%192==0)n=(l-1)/192;else if(((l-1)/192+1)*192+1<=r)n=(l-1)/192+1;elsen=(l-1)/192;m=(r-1)/192;sum=(n+m)*(m-n+1)/2;s=m-n+1+sum*192;printf("%lld\n",s);}
}

Math Problem相关推荐

FZYZ-2071 A Simple Math Problem IX
P2071 -- A Simple Math Problem IX 时间限制:1000MS 内存限制:262144KB 状态:Accepted 标签: 数学问题-博弈论 ...
A Simple Math Problem（2020 ICPC 江西省省赛）
A Simple Math Problem ∑i=1n∑j=1if(j)[gcd(i,j)=1]∑i=1n∑j=inf(i)[gcd(i,j)=1]∑i=1n∑j=1nf(i)[gcd(i,j)=1] ...
HDU 6607 Easy Math Problem（杜教筛 + min_25 + 拉格朗日插值）
Easy Math Problem 推式子 ∑i=1n∑j=1ngcd(i,j)Klcm(i,j)[gcd(i,j)∈prime]∑i=1n∑j=1ngcd(i,j)K−1ij[gcd(i,j)∈pr ...
HDU 6833 A Very Easy Math Problem
A Very Easy Math Problem 推式子 ∑ai=1n∑a2=1n⋯∑ax=1n(∏j=1xajk)f(gcd(a1,a2,-,ax))×gcd(a1,a2,-,ax)\sum_{a_ ...
A Simple Math Problem 矩阵打水题
A Simple Math Problem Lele now is thinking about a simple function f(x). If x < 10 f(x) = x. If x ...
A Simple Math Problem题目翻译
A Simple Math Problem | JXNUOJhttps://acs.jxnu.edu.cn/problem/ICPCJX2020A 描述: Huanhuan challenges yo ...
1.24A Simple Math Problem
原网址:https://acs.jxnu.edu.cn/problem/NOIOPJCH02077215 描述: Huanhuan challenges you to a simple math pr ...
HDU - 5974 A Simple Math Problem 题解
D - Simple Math Problem 戳上方进入原题哟~ 题目大意给一个数 a,b. 让你求满足一下条件的 X,Y: X+Y = a LCM(X,Y) = b 解析题目给出时间限制1s, ...
2018 南京赛区网络预赛 An Olympian Math Problem
题目链接: An Olympian Math Problem 题意给出计算公式 S( n ) = 1×1! + 2×2! + ⋯+(n−1)×(n−1)! 给定一个 n 求 S( n ...
hdu 5435 A serious math problem（数位dp）
题目链接:hdu 5435 A serious math problem 裸的数位dp. #include <cstdio> #include <cstring> #inclu ...

Math Problem

Math Problem相关推荐

最新文章

热门文章