Submission #1071902

#	Time	Username	Problem	Language	Result	Execution time	Memory
1071902		edogawa_something	Tricks of the Trade (CEOI23_trade)	C++17	5 / 100	49 ms	26560 KiB

trade

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<ll> vii;
typedef pair<ll,ll> pii;
#define F first
#define S second
#define all(v) v.begin(),v.end()
#define pb push_back
const ll M=5e5+10;
const ll inf=2e18;
ll n,k,a[M],b[M],pre[M],suf[M],pm[M],sm[M];
int main() {
    ios_base::sync_with_stdio(0),cin.tie(0);
    cin>>n>>k;
    for(int i=0;i<n;i++)
        cin>>a[i];
    for(int i=0;i<n;i++)
        cin>>b[i];
    pre[0]=b[0];
    for(int i=1;i<n;i++) {
        pre[i]=pre[i-1]-b[i-1]+a[i-1]+b[i];
    }
    suf[0]=b[0]-a[0];
    for(int i=1;i<n;i++) {
        suf[i]=suf[i-1]-b[i-1]-a[i]+b[i];
    }
    pm[0]=pre[0];
    for(int i=1;i<n;i++)
        pm[i]=max(pre[i],pm[i-1]);
    sm[n-1]=suf[n-1];
    for(int i=n-2;i>=0;i--)
        sm[i]=max(suf[i],sm[i+1]);
    ll ans=-inf;
    for(int i=0;i<n-1;i++) {
        ans=max(ans,pre[i]+sm[i+1]);
    }
    cout<<ans<<'\n';
    for(int i=0;i<n;i++) {
        cout<<0;
    }
    return 0;
}

• Subtask 0: 0 / 0
• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 5 / 10
• Subtask 4: 0 / 25
• Subtask 5: 0 / 45