Submission #500836

#	Time	Username	Problem	Language	Result	Execution time	Memory
500836		EliteCallsYou	Bootfall (IZhO17_bootfall)	C++17	13 / 100	1081 ms	296 KiB

bootfall

# include <bits/stdc++.h>
using namespace std ;
//############################################################################
# define read(a)/**/for(int i=0;i<int(sizeof(a)/sizeof(a[0]));i++){cin>>a[i];}
# define print(x)/**/for(auto zx:x){cout<<zx<<' ';}
const char* tochar(string a){return a.c_str();}
void files(){freopen("planting.in","r",stdin);freopen("planting.out","w",stdout);}
void speed(){ios_base::sync_with_stdio(false);cin.tie(0);}
long long gcd(long long a,long long b){if(!b){return a;}a%=b;return gcd(b,a);}
long long lcm(long long a,long long b){return a /gcd(a,b) * b;}
//###########################################################################
const int N = 3e5 + 5 ;
const long long MOD = 1e17+7 ;
//###########################################################################
void hack(){}
//###########################################################################
int main(){
	int n, sum = 0 ; cin >> n ;
	int ar[n+1] ;
	for ( int i = 0 ; i < n ; i ++ ){
		cin >> ar[i] ;
		sum += ar[i] ;
	}
	vector < int > ans ;
	for ( int cur = 1 ; cur < 1000 ; cur ++ ){

		ar[n] = cur ;
		sum ++ ;
		bool ok = true ;

		for ( int exl = 0 ; exl <= n ; exl ++ ){
			if ( (sum-ar[exl])%2 ){
				ok = false ;
				break ;
			}
			int s = (sum-ar[exl])/2 ;
			bool dp[s+1] = {false} ;
			dp[0] = true ;
			//////////////////////////////////
			for ( int it = 0 ; it <= n ; it ++ ){
				if ( it == exl ){continue;}
				for ( int i = s-ar[it] ; i > -1 ; i -- ){
					if ( dp[i] ){
						dp[i+ar[it]] = true ;
					}
				}
			}
			//////////////////////////////////
			if ( !dp[s] ){
				ok = false ;
				break ;
			}
		}

		if ( ok ){
			ans.push_back(cur) ;
		}
	}


	cout << ans.size() << '\n' ;
	for ( auto it : ans ){
		cout << it << ' ' ;
	}
}	

Compilation message (stderr)

bootfall.cpp: In function 'void files()':
bootfall.cpp:7:21: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 | void files(){freopen("planting.in","r",stdin);freopen("planting.out","w",stdout);}
      |              ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
bootfall.cpp:7:54: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 | void files(){freopen("planting.in","r",stdin);freopen("planting.out","w",stdout);}
      |                                               ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

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