Submission #166666

#	Time	Username	Problem	Language	Result	Execution time	Memory
166666		abil	Bootfall (IZhO17_bootfall)	C++14	0 / 100	2 ms	252 KiB

bootfall

#include <bits/stdc++.h>

#define fr first
#define sc second
#define pb push_back
#define mk make_pair
#define all(s) s.begin(),s.end()
//#define int long long

using namespace std;

const int N = (1e6 + 12);
const int mod = (1e9 + 7);
const int INF = (0x3f3f3f3f);

int a[N];
main()
{
	set<int > s;
	int n;
	cin >> n;
	for(int i = 1;i <= n; i++){
		scanf("%d", &a[i]);
		s.insert(a[i]);
	}
	bool f = false;
	for(int mask = 1;mask < (1 << n); mask++){
		int sum = 0, sum1 = 0;
		for(int i = 0;i < n; i++){
			if(mask & i){
				sum += a[i + 1];
			}
			else{
				sum1 += a[i + 1];
			}
		}
		if(sum == sum1){
			f = true;
			break;
		}
	}
	if(!f){
		cout << 0;
		return 0;
	}
	cout << s.size() << endl;
	for(auto to : s){
		cout << to << " ";
	}
}

Compilation message (stderr)

bootfall.cpp:17:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^
bootfall.cpp: In function 'int main()':
bootfall.cpp:23:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &a[i]);
   ~~~~~^~~~~~~~~~~~~

• Subtask 1: 0 / 6
• Subtask 2: 0 / 7
• Subtask 3: 0 / 15
• Subtask 4: 0 / 16
• Subtask 5: 0 / 21
• Subtask 6: 0 / 35