Submission #1351912

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Source Code Expand

#include <cstdio>
#pragma warning(disable : 4996)
int n, g[1009][1009];
int main() {
	scanf("%d", &n);
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++) {
			if (i == 0 || j == 0 || i == n - 1 || j == n - 1 || (i + j) % 2 == 0) g[i][j] = 1;
			else g[i][j] == 0;
		}
	}
	for (int i = 1; i <= 10; i++) {
		for (int j = 0; j < n; j++) {
			for (int k = 0; k < n; k++) {
				if (((j + k) & ((2 << i) - 1)) == (1 << i) - 1 && !(~k & ((1 << i) - 1))) g[j][k] = 1;
			}
		}
	}
	int c = 0;
	for (int i = 0; i < n; i++) {
		for (int j = (i & 1) ^ 1; j < n; j += 2) {
			c += g[i][j];
		}
	}
	printf("%d\n", c);
	for (int i = 0; i < n; i++) {
		for (int j = (i & 1) ^ 1; j < n; j += 2) {
			if (g[i][j]) printf("%d %d\n", i, j);
		}
	}
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:5:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
                 ^

Judge Result