Submission #397847

#	Time	Username	Problem	Language	Result	Execution time	Memory
397847		juggernaut	Bali Sculptures (APIO15_sculpture)	C++14	71 / 100	1085 ms	748 KiB

sculpture

#include<bits/stdc++.h>
#define fr first
#define sc second
using namespace std;
void usaco(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
typedef long long ll;
#define USING_ORDERED_SET 0
#if USING_ORDERED_SET
#include<bits/extc++.h>
using namespace __gnu_pbds;
template<class T>using ordered_set=tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;
#endif
template<class T>void umax(T &a,T b){if(a<b)a=b;}
template<class T>void umin(T &a,T b){if(b<a)a=b;}
#ifdef IOI2021SG
    #define printl(args...)printf(args)
#else
    #define printl(args...)((void)0)
#endif
int n,l,r,a[2005];
int main(){
    scanf("%d%d%d",&n,&l,&r);
    for(int i=0;i<n;i++)scanf("%d",&a[i]);
    ll ans=0;
    for(int bit=45;bit>=0;bit--){
        vector<bitset<2005>>dp(n+5);
        dp[0]=1;
        for(int j=1;j<=n;j++){
            ll sum=0;
            for(int k=j-1;k>=0;k--){
                sum+=a[k];
                if(((sum>>(bit+1))|ans)==ans&&!((sum>>bit)&1))dp[j]|=dp[k]<<1;
            }
        }
        bool flag=false;
        for(int i=l;i<=r;i++)flag|=dp[n][i];
        ans<<=1;
        ans|=(!flag);
    }
    printf("%lld",ans);
}

Compilation message (stderr)

sculpture.cpp: In function 'void usaco(std::string)':
sculpture.cpp:5:29: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
    5 | void usaco(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
      |                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sculpture.cpp:5:66: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
    5 | void usaco(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
      |                                                           ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sculpture.cpp: In function 'int main()':
sculpture.cpp:22:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   22 |     scanf("%d%d%d",&n,&l,&r);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
sculpture.cpp:23:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   23 |     for(int i=0;i<n;i++)scanf("%d",&a[i]);
      |                         ~~~~~^~~~~~~~~~~~

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