Submission #531442

#	Time	Username	Problem	Language	Result	Execution time	Memory
531442		mat50013	Bigger segments (IZhO19_segments)	C++11	0 / 100	1 ms	332 KiB

segments

#include <bits/stdc++.h>

using namespace std;
/*
    Am un sir de n numere.
    Trebuie sa-l part in cat mai multe subsecvente astfel inca sumaSubsecv[i] <= sumaSubsecv[i + 1]
    6 2 3 9 13
*/
using ll = long long;
const int NMAX(500005);
int v[NMAX], dp[NMAX];
ll sum[NMAX], bestSol[NMAX];

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);

    int n;
    cin >> n;

    for(int i = 1; i <= n; ++i){
        cin >> v[i];
        sum[i] = sum[i - 1] + v[i];
        dp[i] = 1;
        bestSol[i] = sum[i];
    }

    for(int i = 1; i <= n; ++i){
        int nxtPz = lower_bound(sum + 1, sum + n + 1, sum[i] + bestSol[i]) - sum;
        if(nxtPz <= n){
            if(dp[i] + 1 > dp[nxtPz]){
                dp[nxtPz] = dp[i] + 1;
                bestSol[nxtPz] = sum[nxtPz] - sum[i];
            }
            else if(dp[i] + 1 == dp[nxtPz])
                bestSol[nxtPz] = min(bestSol[nxtPz], sum[nxtPz] - sum[i]);
        }
    }

    cout << dp[n] << '\n';
    return 0;
}

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