제출 #1013003

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1013003		ReLice	3단 점프 (JOI19_jumps)	C++14	19 / 100	231 ms	107604 KiB

jumps

#include <bits/stdc++.h>
#define ll unsigned int
#define str string
#define ins insert
#define ld long double
#define pb push_back
#define pf push_front
#define pof pop_front()
#define pob pop_back()
#define lb lower_bound
#define ub upper_bound
#define endl "\n"
#define fr first
#define sc second
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define sz size()
#define vll vector<ll>
#define bc back()
#define arr array
#define pll vector<pair<ll,ll>>
using namespace std;/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set tree<ll, null_type,less_equal<ll>, rb_tree_tag,tree_order_statistics_node_update>*/
template<class S,class T>
bool chmin(S &a,const T &b) {
	return a>b?(a=b)==b:false;
}
template<class S,class T>
bool chmax(S &a,const T &b) {
	return a<b?(a=b)==b:false;
}
//void fre(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
void start(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
}
const ll inf=1e9;
const ll mod=998244353;
const ll N=5e3+7;
const ld eps=1e-9;
ll dp[N][N];
ll sparse[N][20];
ll a[N];
ll get(ll l,ll r){
    ll x=0;
    for(ll i=0;i<20;i++){
        if((1ll<<i)>r-l+1)break;
        x=i;
    }
    r=r-(1ll<<x)+1;
    return max(sparse[l][x],sparse[r][x]);
}
void solve(){
    ll i,j;
    ll n,q;
    cin>>n;
    for(i=1;i<=n;i++){
        cin>>a[i];
        if(i>2) dp[i-2][i]=a[i-2]+a[i-1]+a[i];
    }
    for(i=0;i<20;i++)sparse[n][i]=a[n];
    for(i=n-1;i>0;i--){
        sparse[i][0]=a[i];
        for(j=1;j<20;j++){
            if((1ll<<j-1)+i>n)break;
            sparse[i][j]=max(sparse[i][j-1],sparse[i+(1ll<<j-1)][j-1]);
        }
    }
    for(ll len=3;len<n;len++){
        ll l,r;
        for(l=1;l<n;l++){
            if(l+len>n)break;
            r=l+len;
            dp[l][r]=max(dp[l+1][r],dp[l][r-1]);
            chmax(dp[l][r],a[l]+a[r]+get(l+1,(r+l)/2));
        }
    }
    cin>>q;
    for(i=0;i<q;i++){
        ll l,r;
        cin>>l>>r;
        cout<<dp[l][r]<<endl;
    }
}
signed main(){
    start();
    ll t=1;
    //cin>>t;
    while(t--) solve();
    return 0;
}
/*





*/

컴파일 시 표준 에러 (stderr) 메시지

jumps.cpp: In function 'void solve()':
jumps.cpp:69:23: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   69 |             if((1ll<<j-1)+i>n)break;
      |                      ~^~
jumps.cpp:70:61: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   70 |             sparse[i][j]=max(sparse[i][j-1],sparse[i+(1ll<<j-1)][j-1]);
      |                                                            ~^~

• Subtask 1: 5 / 5
• Subtask 2: 14 / 14
• Subtask 3: 0 / 27
• Subtask 4: 0 / 54