text: # Problem Petya studies positional notations.He has already learned to add and subtract numbers in the systems of notations with different radices and has moved on to a more complicated action — multiplication.To multiply large numbers one has to learn the multiplication table.Unfortunately, in the second grade students learn only the multiplication table of decimals (and some students even learn it in the first grade).Help Petya make a multiplication table for numbers in the system of notations with the radix k.Input The first line contains a single integer k (2 ≤ k ≤ 10) — the radix of the system.Output Output the multiplication table for the system of notations with the radix k.The table must contain k - 1 rows and k - 1 columns.The element on the crossing of the i-th row and the j-th column is equal to the product of i and j in the system of notations with the radix k.Each line may have any number of spaces between the numbers (the extra spaces in the samples are put for clarity).Examples Input 10 Output 1 2 3 4 5 6 7 8 9 2 4 6 8 10 12 14 16 18 3 6 9 12 15 18 21 24 27 4 8 12 16 20 24 28 32 36 5 10 15 20 25 30 35 40 45 6 12 18 24 30 36 42 48 54 7 14 21 28 35 42 49 56 63 8 16 24 32 40 48 56 64 72 9 18 27 36 45 54 63 72 81 Input 3 Output 1 2 2 11 # Solution #include <bits/stdc++.h> using namespace std; const int INF = 0x3f3f3f3f; int inline in() { int x = 0, c; for (; (unsigned)((c = getchar()) - '0') >= 10;) { if (c == '-') return -in(); if (!~c) throw ~0; } do { x = (x << 3) + (x << 1) + (c - '0'); } while ((unsigned)((c = getchar()) - '0') < 10); return x; } int k; int main() { cin >> k; for (int i = 0; i < (k - 1); i++) { for (int j = 0; j < (k - 1); j++) { int pro = (i + 1) * (j + 1); if (pro >= k) { int tmp = pro / k; pro %= k; pro += tmp * 10; } cout << pro << ' '; } cout << endl; } return 0; }