Submission #780944

#	Time	Username	Problem	Language	Result	Execution time	Memory
780944		teokakabadze	Split the sequence (APIO14_sequence)	C++17	0 / 100	49 ms	3780 KiB

sequence

#include<bits/stdc++.h>
#define f first
#define s second
#define pb push_back
#define int long long
#define N 300005
#define pii pair<int, int>
#define piii pair<int, pii>
using namespace std;

int n, k, i, j, a[N], t, mx, f[N], p[N], s[N], b, ans;

main()
{
    std::ios::sync_with_stdio(0);
    cin.tie(0);
    
    cin >> n >> k;
    for(i = 0; i < n; i++)
    cin >> a[i];
    while(k--)
    {
        t = mx = 0;
        for(i = 0; i < n; i++)
        {
            if(f[i]) t = 0;
            p[i] = t + a[i];
            t += a[i];
        }
        t = 0;
        for(i = n - 1; i >= 0; i--)
        {
            s[i] = t + a[i];
            t += a[i];
            if(f[i]) t = 0;
        }
        for(i = 0; i < n - 1; i++)
        if(!f[i + 1] && p[i] * s[i + 1] > mx) mx = p[i] * s[i + 1], b = i + 1;
        f[b] = 1, ans += mx;
        //cout << b << ' ' << mx << '\n';
    }
    cout << ans << '\n';
    for(i = 0; i < n; i++)
    if(f[i]) cout << i << ' ';
    cout << '\n';
}

Compilation message (stderr)

sequence.cpp:13:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   13 | main()
      | ^~~~

• Subtask 1: 0 / 11
• Subtask 2: 0 / 11
• Subtask 3: 0 / 11
• Subtask 4: 0 / 17
• Subtask 5: 0 / 21
• Subtask 6: 0 / 29