文章作者：姜南(Slyar) 文章来源：Slyar Home (www.slyar.com) 转载请注明，谢谢合作。
找规律题
Description
Starting from point (0,0) on a plane, we have written all non-negative integers 0,1,2, … as shown in the figure. For example, 1, 2, and 3 has been written at points (1,1), (2,0), and (3, 1) respectively and this pattern has continued.
You are to write a program that reads the coordinates of a point (x, y), and writes the number (if any) that has been written at that point. (x, y) coordinates in the input are in the range 0…5000.
Input
The first line of the input is N, the number of test cases for this problem. In each of the N following lines, there is x, and y representing the coordinates (x, y) of a point.
Output
For each point in the input, write the number written at that point or write No Number if there is none.
Sample Input
3
4 2
6 6
3 4
Sample Output
6
12
No Number
Slyar:简单的找规律题，懒得说了…
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 |
#include <stdio.h> int main() { int n, x, y; scanf("%d", &n); while(n--) { scanf("%d%d", &x, &y); if (x == y || x == y + 2) { if (x % 2 == 0 && y % 2 == 0) { printf("%d\n", x + y); } else { printf("%d\n", x + y - 1); } } else { printf("No Number\n"); } } //system("pause"); return 0; } |
转载请注明：Slyar Home » POJ 1663 Number Steps C语言版