Ruudukko

#include <iostream>
using namespace std;

int main(){
  int in;
	cin >> in;
	
  int test, out[in][in] = {0};
	bool pass;

	for (int y=0; y<in; y++){
	  for (int x=0; x<in; x++){
			
			test = 1;

			while(true){
				pass = true;
				for (int tx = x; tx >= 0; tx--){
					if (out[tx][y] == test) {pass=false;} 
				}
	 			for (int ty = y; ty >= 0; ty--){
					if (out[x][ty] == test) {pass=false;} 
				}

				if (pass == true){break;} else {test++;}
			}
			out[x][y] = test;

		}
	}
	
	for (int y=0; y<in; y++){
	  for (int x=0; x<in; x++){
			if (x < in-1){cout << out[x][y] << " ";} else {cout << out[x][y];}		
		}
		cout << endl;
	}		
		
  return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED