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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. int sz = 10; //actual size is 2*sz - 1
  6. for (int i = 0; i < 2*sz - 1; ++i) {
  7. for (int j = 0; j < 2*sz - 1; ++j) {
  8. cout << (i >= sz - 1 && j >= i - sz + 1 && j <= 3*sz - 3 - i) << ' ';
  9. }
  10. cout << endl;
  11. }
  12. return 0;
  13. }
Success #stdin #stdout 0.01s 5300KB
stdin
Standard input is empty
stdout
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 
0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 
0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 
0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 
0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 
0 0 0 0 0 1 1 1 1 1 1 1 1 1 0 0 0 0 0 
0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 0 0 0 0 
0 0 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0