Little Elephant loves magic squares very much. A magic square is a 3 × 3 table, each cell contains some positive integer. At that the sums of integers in all rows, columns and diagonals of the table are equal. The figure below shows the magic square,…

  Little Elephant loves magic squares very much. A magic square is a 3 × 3 table, each cell contains some positive integer. At that the sums of integers in all rows, columns and diagonals of the table are equal. The figure below shows the magic squar…

题目链接: B. Chris and Magic Square 题意: 问在那个空位子填哪个数可以使行列对角线的和相等,就先找一行或者一列算出那个数,再验证是否可行就好; AC代码: #include <iostream> #include <cstdio> #include <cstring> #include <algorithm> #include <cmath> #include <bits/stdc++.h> #includ…

Xtreme8.0 - Magic Square 题目连接: https://www.hackerrank.com/contests/ieeextreme-challenges/challenges/magic-square Description Johnny designed a magic square (square of numbers with the same sum for all rows, columns and diagonals i.e. both the main di…

B. Chris and Magic Square 题目连接: http://www.codeforces.com/contest/711/problem/B Description ZS the Coder and Chris the Baboon arrived at the entrance of Udayland. There is a n × n magic grid on the entrance which is filled with integers. Chris notice…

ZS the Coder and Chris the Baboon arrived at the entrance of Udayland. There is a n × n magic grid on the entrance which is filled with integers. Chris noticed that exactly one of the cells in the grid is empty, and to enter Udayland, they need to fi…

time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output   ZS the Coder and Chris the Baboon arrived at the entrance of Udayland. There is a n × n magic grid on the entrance which is filled with in…

Magic Square Time Limit: 2 Seconds      Memory Limit: 65536 KB In recreational mathematics, a magic square of n-degree is an arrangement of n2 numbers, distinct integers, in a square, such that the n numbers in all rows, all columns, and both diagona…

Chris and Magic Square 题目链接: http://codeforces.com/contest/711/problem/B Description ZS the Coder and Chris the Baboon arrived at the entrance of Udayland. There is a n × n magic grid on the entrance which is filled with integers. Chris noticed that…

题目:在网格某一处填入一个正整数,使得网格每行,每列以及两条主对角线的和都相等 题目链接:http://codeforces.com/contest/711/problem/B 分析:题目不难,找到要填的那个数填进去,然后循环比较每行每列以及对角线的和是否相等,题目提交上去卡了几次要注意几点 注意:1.答案数据范围$1\leq x \leq 1e18$,要用 long long 2.特殊情况,$n \equiv 1$时,由于一定有要填的数,所以一定有解 3.反正就是要注意看清楚题目和数据边界情况…