Submission #1801578

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Source Code Expand

#include <cstdio>
typedef long long ll;
const int N = 205;
ll n;
int a[55], len, cnt, length, lx[N], rx[N], nl, nr;
void solve(ll x) {
	while (x) a[++len] = x & 1, x >>= 1;
	nl = nr = 0;
	for (int i = len - 1; i; --i) {
		lx[++nl] = ++cnt;
		if (a[i]) rx[++nr] = ++cnt;
	}
		
	printf("%d\n", cnt << 1);
	for (int i = cnt; i; --i) printf("%d ", i);
	for (int i = nl; i; --i) printf("%d ", lx[i]);
	for (int i = 1; i <= nr; ++i) printf("%d ", rx[i]);
}
int main() {
	scanf("%lld", &n);
	solve(n + 1);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:20:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld", &n);
                   ^

Judge Result