D. Nash Matrix time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output Nash designed an interesting yet simple board game where a player is simply required to follow instructions written on the cell w…
Now Vasya is taking an exam in mathematics. In order to get a good mark, Vasya needs to guess the matrix that the teacher has constructed! Vasya knows that the matrix consists of n rows and m columns. For each row, he knows the xor (bitwise excluding…
Inna and Huge Candy Matrix CodeForces - 400C Inna and Dima decided to surprise Sereja. They brought a really huge candy matrix, it's big even for Sereja! Let's number the rows of the giant matrix from 1 to n from top to bottom and the columns — from …
Ilya and Matrix Time Limit:1000MS Memory Limit:262144KB 64bit IO Format:%I64d & %I64u Submit Status Practice CodeForces 313C Description Ilya is a very good-natured lion. He likes maths. Of all mathematical objects, his favourite one is matri…
B. OR in Matrix Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/486/problem/B Description Let's define logical OR as an operation on two logical values (i. e. values that belong to the set {0, 1}) that is equal to 1 if eith…
原题地址:http://codeforces.com/problemset/problem/364/A 题目大意: 给定一个数字a(0 ≤ a ≤ 109)和一个数列s(每个数都是一位,长度不超过4000),定义一个矩阵Mij = si * sj ,求M有多少个子矩阵上面的数字和恰巧等于a 算法分析: 这道题是Codeforces Round #213 Div 1 Problem A && Div 2 Problem C,赛场上没写对,主要是没分析清楚,有一点想法就迫不及待地提交,结果白白…
C. Little Artem and Matrix 题目连接: http://www.codeforces.com/contest/669/problem/C Description Little Artem likes electronics. He can spend lots of time making different schemas and looking for novelties in the nearest electronics store. The new contro…
任意门:http://codeforces.com/contest/1118/problem/C C. Palindromic Matrix time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Let's call some square matrix with integer values in its cells palind…
F. Magic Matrix 题目连接: http://www.codeforces.com/contest/632/problem/F Description You're given a matrix A of size n × n. Let's call the matrix with nonnegative elements magic if it is symmetric (so aij = aji), aii = 0 and aij ≤ max(aik, ajk) for all…
Educational Codeforces Round 40 (Rated for Div. 2) C. Matrix Walk time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output There is a matrix A of size x × y filled with integers. For every , *A**i, …
E. Strictly Positive Matrix You have matrix a of size n × n. Let's number the rows of the matrix from 1 to n from top to bottom, let's number the columns from 1 ton from left to right. Let's use aij to represent the element on the intersection of t…
二分绝对值,推断是否存在对应的矩阵 H. Degenerate Matrix time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output The determinant of a matrix 2 × 2 is defined as follows: A matrix is called degenerate if its determin…
B. Inna and New Matrix of Candies time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Inna likes sweets and a game called the "Candy Matrix". Today, she came up with the new game "Can…
https://codeforces.com/contest/1118/problem/C 在查找元素的时候,必须按4,2,1的顺序进行.因为,如果先找1,可能就把原来的4拆散了,然后再找4,就找不到了 #include<bits/stdc++.h> using namespace std; ][]; int main(){ int n; cin>>n; map<int,int> mp; int t; ;i<n*n;i++){ cin>>t; mp[t…
Elongated Matrix 预处理一下两两之间的最小值, 然后直接dp. #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…
题目链接:Matrix Walk 题意:设有一个N×M的矩阵,矩阵每个格子都有从1-n×m的一个特定的数,具体数的排列如图所示.假设一个人每次只能在这个矩阵上的四个方向移动一格(上下左右),给出一条移动的轨迹上的数字,求出满足这个人移动轨迹的一格矩阵的N和M. 题解:首先可以确定的是左右移动的话,相邻格子之间数字相差的绝对值一定是1,而向上或向下移动的数字只差的绝对值一定相等.按照这个思路,判断给出的轨迹相邻格子之间的差值,看是否差值的绝对值只有1和另外一个数字就可以基本解决问题了.但是这里还要…