Ruudukko

input/code.cpp: In function 'int main()':
input/code.cpp:30:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~

#include <stdio.h>

int is_int(int a, int b[], int n) {
	int res = 0;
	int i=1;
	while (i<=n) {
		if (b[i] == a) {
			// printf("_%d_",b[i]);
			res = 1;
			break;
		}
		++i;
	}
	return res;
}
int pick_one(int a[], int b[], int n) {
	int res = 1;
	for (int i_a = 1; i_a<=n;i_a++) {
		if((is_int(i_a,a,n) == 0) && (!is_int(i_a,b,n))) {
			res = i_a;
			break;
		};
	}
	return res;
}

int main() {
	int n;
	printf("Syota n: ");
	scanf("%d", &n);

	int his_row[n+1][n+1], his_col[n+1][n+1];

	for(int row = 1; row <= n; row++) {
		for(int col = 1; col <= n; col++) {
			int m = pick_one(his_row[row], his_col[col], n);
			printf("%d ", m);
			his_row[row][col] = m;
			his_col[col][row] = m;
		}
		printf("\n");
	}
	// int g[10] = {0,2,3,4,5,6,7};
	// printf("%d\n", pick_one(g,g,n));
}

Test 1

Verdict: WRONG ANSWER

Test 2

Verdict: WRONG ANSWER

Test 3

Verdict: WRONG ANSWER

Test 4

Verdict: WRONG ANSWER

Test 5

Verdict: WRONG ANSWER

Test 6

Verdict: WRONG ANSWER