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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <string.h>
  4. #include <math.h>
  5.  
  6. #define max 1000
  7.  
  8. int mat[max][max];
  9.  
  10. int main() {
  11. //    int mat[max][max];
  12.     int n;
  13.     scanf("%d", &n);
  14.  
  15.     int num = 1;
  16.     for (int d = 0; d <= 2 * (n - 1); d++) {
  17.         if (d % 2 == 0) {
  18.             for (int i = n - 1; i >= 0; i--) {
  19.                 int j = d - i;
  20.                 if (j >= 0 && j < n) {
  21.                     mat[i][j] = num++;
  22.                 }
  23.             }
  24.         } else {
  25.             for (int i = 0; i < n; i++) {
  26.                 int j = d - i;
  27.                 if (j >= 0 && j < n) {
  28.                     mat[i][j] = num++;
  29.                 }
  30.             }
  31.         }
  32.     }
  33.  
  34.     for (int i = 0; i < n; i++) {
  35.         for (int j = 0; j < n; j++) {
  36.             printf("%d", mat[i][j]);
  37.             if (j != n - 1) printf(" ");
  38.         }
  39.         printf("\n");
  40.     }
  41.     return 0;
  42. }
Success #stdin #stdout 0.01s 5288KB
comments (?)
stdin 
4
stdout 
1 2 6 7
3 5 8 13
4 9 12 14
10 11 15 16
https://ideone.com/LpIplt
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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