Submission #1096983

#	Time	Username	Problem	Language	Result	Execution time	Memory
1096983		itk13_thanhlong	Triple Jump (JOI19_jumps)	C++14	5 / 100	4069 ms	7772 KiB

jumps

#include <bits/stdc++.h>
#define ll long long
#define pii pair <int,int>
#define pll pair <ll,ll>
#define fi first
#define se second
#define ull unsigned long long
#define umap unordered_map <ll,int>
#define uset unordered_set <ll>
#define endl "\n"
#define fast ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define setpr(x) cout<<setprecision(x)<<fixed
#define MOD 1000000007
inline ll gcd(ll a, ll b) {ll r; while (b) {r = a % b; a = b; b = r;} return a;}
inline ll lcm(ll a, ll b) {return a*b / gcd(a,b);}
inline ll powmod(ll a,ll n) {ll res=1; while (n) { if (n % 2!=0) res=((res % MOD)*(a % MOD)) % MOD; a=((a % MOD)*(a % MOD)) % MOD; n/=2; } return res;}
using namespace std;
const int maxn=1e6+5;
const int oo=1e9;
const int dx[]={-1,0,1,0,1,-1,1,-1};
const int dy[]={0,1,0,-1,-1,1,1,-1};

int n,m;
ll a[maxn],tree[4*maxn];

void build(ll id,ll l,ll r)
{
    if (l==r)
    {
        tree[id]=a[r];
        return;
    }
    ll mid=(l+r) / 2;
    build(2*id,l,mid);
    build(2*id+1,mid+1,r);
    tree[id]=max(tree[2*id],tree[2*id+1]);
}

ll get(ll id,ll l,ll r,ll u,ll v)
{
    if (v<l || u>r) return -1e18;
    if (u<=l && r<=v) return tree[id];
    ll mid=(l+r) / 2;
    return max(get(2*id,l,mid,u,v),get(2*id+1,mid+1,r,u,v));
}

int main()
{
    fast;
    cin>>n;
    for(int i=1; i<=n; i++) cin>>a[i];
    build(1,1,n);
    cin>>m;
    while (m--)
    {
        ll l,r;
        cin>>l>>r;
        ll ans=0;
        for(int x=l; x<=r; x++)
            for(int y=x+1; y<=r; y++)
                if (get(1,1,n,(y-x)+y,r)!=-1e18) ans=max(ans,a[x]+a[y]+get(1,1,n,(y-x)+y,r));
        cout<<ans<<endl;
    }
}

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