Submission #1282197

#	Time	Username	Problem	Language	Result	Execution time	Memory
1282197		trandangquang	Bali Sculptures (APIO15_sculpture)	C++20	100 / 100	173 ms	580 KiB

sculpture

#include<bits/stdc++.h>
using namespace std;

#define foru(i,a,b) for(int i=(a); i<=(b); ++i)
#define ford(i,a,b) for(int i=(a); i>=(b); --i)
#define rep(i,a) for(int i=0; i<(a); ++i)
#define sz(a) (int)(a).size()
#define all(a) (a).begin(),(a).end()
#define bit(s,i) (((s)>>(i))&1)
#define ii pair<int,int>
#define fi first
#define se second
#define pb push_back
#define eb emplace_back
#define ll long long
#define _ << " " <<

template <class X, class Y> bool maxi(X &x, Y y){return x<y?x=y,true:false;}
template <class X, class Y> bool mini(X &x, Y y){return x>y?x=y,true:false;}

const int N=2020;

int n,a,b,arr[N];
ll p[N];

namespace sub1{
    bool dp[101][101];
    void solve(){
        ll res=(1LL<<61)-1;
        ford(curB,60,0){
            res^=(1LL<<curB);

            memset(dp,0,sizeof(dp));
            dp[0][0]=1;
            foru(i,1,n) foru(g,1,i){
                foru(j,0,i-1){
                    if(((p[i]-p[j])&res)==(p[i]-p[j])){
                        dp[i][g]|=dp[j][g-1];
                    }
                }
            }

            bool chk=0;
            foru(g,a,b) chk|=dp[n][g];

            if(!chk) res^=(1LL<<curB);
        }
        cout<<res<<'\n';
    }
}

namespace sub2{
    int dp[2020];
    void solve(){
        ll res=(1LL<<61)-1;
        ford(curB,60,0){
            res^=(1LL<<curB);

            memset(dp,0x3f,sizeof(dp));

            dp[0]=0;
            foru(i,1,n){
                foru(j,0,i-1){
                    if(((p[i]-p[j])&res)==(p[i]-p[j])){
                        dp[i]=min(dp[i],dp[j]+1);
                    }
                }
            }

            if(dp[n]>b) res^=(1LL<<curB);
        }
        cout<<res<<'\n';
    }
}

void solve(){
    cin>>n>>a>>b;
    foru(i,1,n) cin>>arr[i];
    foru(i,1,n) p[i]=p[i-1]+arr[i];

    if(a>1) return sub1::solve();
    return sub2::solve();
}

int32_t main(){
    #define task "test"
    if(fopen(task".inp","r")){
        freopen(task".inp","r",stdin);
        freopen(task".out","w",stdout);
    }
    cin.tie(0)->sync_with_stdio(0);

    int tc=1; //cin>>tc;
    rep(i,tc){
        solve();
    }
}

Compilation message (stderr)

sculpture.cpp: In function 'int32_t main()':
sculpture.cpp:88:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   88 |         freopen(task".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
sculpture.cpp:89:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   89 |         freopen(task".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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