Submission #1140845

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1140845	2025-01-27 13:47:17	Luvidi	Discharging (NOI20_discharging)	C++17	100 / 100	84 ms	15944 KiB

Discharging

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#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pll pair<ll, ll>
#define pii pair<int, int>
#define fs first
#define sc second
#define pb push_back
double ins(pll p1,pll p2){
    double x=p1.sc-p2.sc,y=p2.fs-p1.fs;
    return x/y;
}
void solve() {
    int n;
    cin>>n;
    ll a[n+1];
    for(int i=1;i<=n;i++)cin>>a[i];
    vector<pll> ch;
    ll dp[n+1];
    dp[0]=0;
    int idx=0,lg=0;
    for(int i=1;i<=n;i++){
        if(!lg||a[i]>a[lg]){
            for(int j=lg+1;j<=i;j++){
                pll p={n-j+1,dp[j-1]};
                while(ch.size()>1&&ins(ch[ch.size()-2],ch.back())>ins(ch.back(),p))ch.pop_back();
                ch.push_back(p);
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 13 / 13
• Subtask 3: 25 / 25
• Subtask 4: 11 / 11
• Subtask 5: 14 / 14
• Subtask 6: 28 / 28