Submission #552712

#	Time	Username	Problem	Language	Result	Execution time	Memory
552712		urosk	Bali Sculptures (APIO15_sculpture)	C++14	21 / 100	1 ms	340 KiB

sculpture

//https://oj.uz/problem/view/APIO15_sculpture
// __builtin_popcount(x) broj bitova
// __builtin_popcountll(x)
// __builtin_clz(x) vodece nule
// __builtin_clzll(x)
// __builtin_ctz(x) nule na pocetku
// __builtin_ctzll(x)
// 2000000011
// 2000000033
#include "bits/stdc++.h"
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#define ld double
#define ll long long
#define ull unsigned long long
#define llinf 100000000000000000LL // 10^17
#define iinf 2000000000 // 2*10^9
#define pb push_back
#define popb pop_back
#define fi first
#define sc second
#define endl '\n'
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pld pair<ld,ld>
#define sz(a) ((ll)(a.size()))
#define all(a) a.begin(),a.end()
#define rall(a) a.begin(),a.end(),greater<int>()
#define getunique(v) {sort(all(v)); v.erase(unique(all(v)), v.end());}
#define pi 3.14159265358979323846
#define here cerr<<"=============================================================================\n"
#define ceri(a,l,r) {for(ll i_ = l;i_<=r;i_++) cerr<<a[i_]<< " ";cerr<<endl;}
#define ceri2(a,l,r,n,m) {for(ll i = l;i<=r;i++){for(ll j = n;j<=m;j++) cerr<<a[i][j]<< " ";cerr<<endl;}}
#define yes cout<<"YES"<<endl
#define no cout<<"NO"<<endl
#define daj_mi_malo_vremena ios_base::sync_with_stdio(false);cerr.tie(0);cout.tie(0);cin.tie(0);
using namespace std;
using namespace __gnu_pbds;

template<typename T> using vc = vector<T>;
template<typename T> using vvc = vc<vc<T>>;
typedef tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
typedef tree<ll,null_type,less_equal<ll>,rb_tree_tag,tree_order_statistics_node_update> ordered_multiset;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll rnd(ll l,ll r){
    return uniform_int_distribution<ll>(l,r)(rng);
}

void setIO(string inoutname)
{
	freopen((inoutname+".in").c_str(),"r",stdin);
    	freopen((inoutname+".out").c_str(),"w",stdout);
}
#define mod 1
ll gcd(ll a, ll b)
{
   if(b==0) return a;
   if(a==0) return b;
   if(a>=b)  return gcd(a%b,b);
   return  gcd(a,b%a);
}
ll lcm(ll a,ll b){
   return (a/gcd(a,b))*b;
}
ll add(ll x,ll y){
    x+=y;
    if(x<0){
        x%=mod;
        x+=mod;
	if(x==mod) x = 0;
    }else{
        if(x>=mod) x%=mod;
    }
    return x;
}
ll mul(ll a,ll b){
	ll ans = (a*b)%mod;
	if(ans<0) ans+=mod;
	return ans;
}
ll po(ll x,ll y){
    if(y==0) return 1LL;
    ll ans = po(x,y/2);
    ans = mul(ans,ans);
    if(y&1) ans = mul(ans,x);
    return ans;
}
ll inv(ll x){return po(x,mod-2);}
#define maxn 2005
#define lg 20
ll n,la,lb;
ll a[maxn];
ll p[maxn];
ll dp2[maxn];
bool dp[maxn][maxn];
bool moe(ll x){
    if(la==1){
        fill(dp2,dp2+maxn,llinf);
        dp2[0] = 0;
        for(ll i = 1;i<=n;i++){
            for(ll j = i-1;j>=0;j--){
                ll sum = p[i]-p[j];
                if((sum|x)==x) dp2[i] = min(dp2[i],dp2[j]+1);
            }
        }
        return dp2[n]<=lb;
    }
    for(ll i = 1;i<=n;i++) fill(dp[i],dp[i]+maxn,0);
    for(ll i = 0;i<=n;i++) dp[0][i] = 1;
    for(ll i = 1;i<=n;i++){
        for(ll b = 1;b<=i;b++){
            for(ll j = i-1;j>=0;j--){
                ll sum = p[i] - p[j];
                if((sum|x)!=x) continue;
                dp[i][b]|=dp[j][b-1];
            }
        }
    }
    for(ll i = la;i<=lb;i++) if(dp[n][i]) return 1;
    return 0;
}
void tc(){
	daj_mi_malo_vremena
    cin >> n >> la >> lb;
    for(ll i = 1;i<=n;i++) cin >> a[i];
    for(ll i = 1;i<=n;i++) p[i] = p[i-1] + a[i];
    ll ans = (1LL<<lg)-1;
    for(ll j = lg-1;j>=0;j--){
        if(moe(ans-(1<<j))) ans -= (1<<j);
    }
    cout<<ans<<endl;
}
int main(){
	daj_mi_malo_vremena
	//setIO("lol");
	int t; t = 1;
	while(t--){
		tc();
	}
	return 0;
}
/*
6 1 3
8 1 2 1 5 4
*/

Compilation message (stderr)

sculpture.cpp: In function 'void setIO(std::string)':
sculpture.cpp:51:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |  freopen((inoutname+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sculpture.cpp:52:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |      freopen((inoutname+".out").c_str(),"w",stdout);
      |      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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