Submission #1220665

#	Time	Username	Problem	Language	Result	Execution time	Memory
1220665		M_SH_O	Bigger segments (IZhO19_segments)	C++20	0 / 100	0 ms	328 KiB

segments

#include <bits/stdc++.h>
//#include "grader.h"
/*#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>*/

#define ll long long
#define ll1 long long
#define ull unsigned long long
#define dou long double
#define str string
#define vll vector<ll>
#define vi vector<int>
#define pll pair<ll, ll>
#define vpll vector<pll>
#define vbool vector<bool>
#define vstr vector<str>
#define vvll vector<vll>
#define pb push_back
#define pf push_front
//#define endl "\n"
#define fr first
#define se second
// #define sortcmp(a) sort(a.begin(), a.end(), cmp)
#define sort(a) sort(a.begin(), a.end())
#define all(a) a.begin(), a.end()
#define reverse(a) reverse(a.begin(), a.end())
#define speed ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define INF 1000000000000000000
#define ordered_set tree<pll, null_type, less<pll>, rb_tree_tag, tree_order_statistics_node_update>

using namespace std;
//using namespace __gnu_pbds;

mt19937 rng(1488);
ll randll(ll l, ll r){
    return uniform_int_distribution<ll>(l, r)(rng);
}

int main() {
    srand(time(0));
    speed;

    ll n;
    cin >> n;
    vll a(n);
    for (int i =0 ; i < n; i ++) {
        cin >> a[i];
    }

    ll k = 1, sm = 0, s = a[0], sp = 0, l1 = 1;
    ll l = 1;
    for (int i = 1; i < n; i ++) {
        sm += a[i];
        if (k > 1) {
            if (sm*2 < a[l] && s+sm >= sp+a[l]) {
                s += sm;
                sp += a[l];
                s -= a[l];
                l ++;
                l1 = i+1;
                sm = 0;
            }
        }
        //cout << sm << ' ' << s << endl;
        if (sm >= s) {
            k ++;
            sp = s;
            s = sm;
            sm = 0;
            l = l1;
            l1 = i+1;
            while (1) {
                if (sp+a[l] <= s - a[l]) {
                    sp += a[l];
                    s -= a[l];
                    l ++;
                }
                else break;
            }
        }
    }

    cout << k << endl;
}

• Subtask 1: 0 / 13
• Subtask 2: 0 / 14
• Subtask 3: 0 / 10
• Subtask 4: 0 / 36
• Subtask 5: 0 / 27