Submission #1083143

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1083143	2024-09-02 16:37:22	BLOBVISGOD	Election (BOI18_election)	C++17	100 / 100	296 ms	30020 KiB

election

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#include "bits/stdc++.h"
using namespace std;
#define rep(i,a,b) for(int i=(a); i<(b); ++i)
#define all(x) x.begin(),x.end()
#define sz(x) int(x.size())
typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vvi;
struct segtree{
    struct node{
        int sm=0, L=0, R=0, A=0;
        node operator+(node b){
            return node{sm+b.sm,
                max(L,sm+b.L),
                max(b.R,b.sm+R),
                max(max(sm+b.A,A+b.sm),L+b.R)};
        }
    };
    int n;
    vector<node> seg;
    segtree(vi a){
        n = 1;
        while(n<sz(a)) 
            n*=2;
        seg.resize(n*2);
        rep(i,0,sz(a)) seg[i+n] = {a[i],max(0,a[i]),max(0,a[i]),max(0,a[i])};
        for(int i = n-1; i>0; --i) seg[i] = seg[i*2]+seg[i*2+1];
    }
 
 
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• Subtask 1: 28 / 28
• Subtask 2: 54 / 54
• Subtask 3: 18 / 18