Submission #1356135

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Source Code Expand

#include <bits/stdc++.h>

#define lld long long
#define pp pair<int,int>
#define y1 y11
#define INF 1000000000
#define pb push_back

using namespace std;

int N;
int a[200002];
bool check[200002];

int main(){
	int x;
	scanf("%d %d",&N,&x);
	if(x == 1 || x == N*2-1){
		puts("No");
		return 0;
	}
	puts("Yes");
	a[N] = x; check[x] = true;
	a[N-1] = x-1; check[x-1] = true;
	a[N+1] = x+1; check[x+1] = true;
	if(x != 2){
		a[N+2] = x-2; check[x-2] = true;
	}else{
		a[N-2] = x+2; check[x+2] = true;
	}
	int t = 1;
	for(int i=1; i<=N*2-1; i++){
		if(a[i] == 0){
			while(1){
				if(!check[t]) break;
				t++;
			}
			a[i] = t; check[t] = true;
		}
		printf("%d\n",a[i]);
	}

	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:17:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&N,&x);
                      ^

Judge Result