Lucky Sum Time Limit: 2000ms Memory Limit: 262144KB This problem will be judged on CodeForces. Original ID: 121A64-bit integer IO format: %I64d Java class name: (Any) Petya loves lucky numbers. Everybody knows that lucky numbers are positive…
C. Lucky Numbers time limit per test 0.5 seconds memory limit per test 64 megabytes input standard input output standard output The numbers of all offices in the new building of the Tax Office of IT City will have lucky numbers. Lucky number is a num…
E. Lucky Queries time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains…
Lucky Queries 感觉是很简单的区间合并, 但是好像我写的比较麻烦. #include<bits/stdc++.h> #define LL long long #define fi first #define se second #define mk make_pair #define PLL pair<LL, LL> #define PLI pair<LL, int> #define PII pair<int, int> #define SZ(x…
题目描述 Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not. Petya has sequence aa co…
Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not. Petya has an array consisting o…
LINK 题目大意 很简单自己看 思路 考虑生成函数(为啥tags里面有一个dp啊) 显然,每一个指数上是否有系数是由数集中是否有这个数决定的 有的话就是1没有就是0 然后求出这个生成函数的\(\frac{n}{2}\)次方 把每一项的系数全部平方加起来..没了 #include<bits/stdc++.h> using namespace std; typedef vector<int> Poly; const int N = 3e6 + 10; const int Mod =…
All bus tickets in Berland have their numbers. A number consists of n digits (n is even). Only k decimal digits d1,d2,…,dk can be used to form ticket numbers. If 0 is among these digits, then numbers may have leading zeroes. For example, if n=4 and o…
Lucky Ticket CodeForces - 146A Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not…
1217. Unlucky Tickets Time limit: 1.0 secondMemory limit: 64 MB Strange people live in Moscow! Each time in the bus, getting a ticket with a 6-digit number, they try to sum up the first half of digits and the last half of digits. If these two sums ar…
任意门:http://codeforces.com/contest/1058/problem/C C. Vasya and Golden Ticket time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Recently Vasya found a golden ticket — a sequence which consists…
Lucky ticketsTime Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=86686#problem/J Description Everyone knows that in less than a month the Ice Hockey World Championship will start in Minsk. But few of the…
2017 JUST Programming Contest 2.0 题目链接:http://codeforces.com/gym/101343/problem/A A. On The Way to Lucky Plaza time limit per test:1.0 s memory limit per test:256 MB input:standard input output:standard output Alaa is on her last day in Singapore, s…
链接: https://codeforces.com/contest/1215/problem/D 题意: Monocarp and Bicarp live in Berland, where every bus ticket consists of n digits (n is an even number). During the evening walk Monocarp and Bicarp found a ticket where some of the digits have bee…
C. Vasya and Golden Ticket time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Recently Vasya found a golden ticket - a sequence which consists of n digits a1a2-an. Vasya considers a ticket to be l…
Codeforces 1215D Ticket Game 原题 题目 Monocarp and Bicarp live in Berland, where every bus ticket consists of n digits (n is an even number). During the evening walk Monocarp and Bicarp found a ticket where some of the digits have been erased. The numbe…
