Submission #946533

#	Time	Username	Problem	Language	Result	Execution time	Memory
946533		amirhoseinfar1385	Bali Sculptures (APIO15_sculpture)	C++17	0 / 100	2 ms	524 KiB

sculpture

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2")
#include<bits/stdc++.h>
using namespace std;
const long long maxn=2000+10,lg=45;
long long n,l,r,all[maxn],mainres;

void vorod(){
	cin>>n>>l>>r;
	for(long long i=1;i<=n;i++){
		cin>>all[i];
	}
}

long long check2(long long f){
	vector<long long>dp(n+1);
	dp[0]=0;
	for(long long i=1;i<=n;i++){
		dp[i]=n+2;
		long long sum=0;
		for(long long j=i;j>=1;j--){
			sum+=all[j];
			if(sum&f){
				continue;
			}
			dp[i]=min(dp[i],dp[j-1]+1);
		}
	}
	return dp[n]<=r;
}

long long check1(long long f){
	vector<vector<char>>dp(n+1,vector<char>(n+1));
	dp[0][0]=1;
	for(long long i=1;i<=n;i++){
		long long suma=0;
		for(long long j=i;j>=1;j--){
			suma+=all[j];
			for(long long h=1;h<=n;h++){
				if(f&suma){
					continue;
				}
				if(dp[j-1][h-1]==1){
					dp[i][h]=1;
				}
			}
		}
	}
	for(long long i=l;i<=r;i++){
		if(dp[n][i]==1){
			return 1;
		}
	}
	return 0;
}

void solve1(){
	long long fix=0;
	for(long long i=lg-1;i>=0;i--){
		fix+=(1ll<<i);
		if(!check1(fix)){
			fix-=(1ll<<i);
		}
	}
	mainres=(1ll<<lg)-1-fix;
}

void solve2(){
	long long fix=0;
	for(long long i=lg-1;i>=0;i--){
		fix+=(1ll<<i);
		if(!check2(fix)){
			fix-=(1ll<<i);
		}
	}
	mainres=(1ll<<lg)-1-fix;
}

void khor(){
	cout<<mainres<<"\n";
}

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	freopen("inp.txt","r",stdin);
	vorod();
	if(l>1){
		solve1();
	}else{
		solve2();
	}
	khor();
}

Compilation message (stderr)

sculpture.cpp: In function 'int main()':
sculpture.cpp:87:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   87 |  freopen("inp.txt","r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 9
• Subtask 2: 0 / 16
• Subtask 3: 0 / 21
• Subtask 4: 0 / 25
• Subtask 5: 0 / 29