Submission #344634

#	Time	Username	Problem	Language	Result	Execution time	Memory
344634		Nurlykhan	Bigger segments (IZhO19_segments)	C++17	37 / 100	20 ms	512 KiB

segments

#include <bits/stdc++.h>

#define ll long long

using namespace std;

const int N = (int)3000 + 10;
const int mod = (int)1e9 + 7;

int n;
int a[N];
ll pref[N];

ll get_sum(int l, int r) {
    return pref[r] - pref[l - 1];
}

pair<int, int> dp[N];

int main() {
   // freopen("in.txt", "r", stdin);
    scanf("%d", &n);
    for (int i = 1; i <= n; i++) {
        scanf("%d", &a[i]);
        pref[i] = pref[i - 1] + a[i];
    }


    for (int i = 1; i <= n; i++) {
        dp[i] = make_pair(1, 1);
        for (int j = 1; j < i; j++) {
            int left = dp[j].second;
            if (get_sum(left, j) <= get_sum(j + 1, i)) {
                dp[i] = max(dp[i], make_pair(dp[j].first + 1, j + 1));
            }
        }
    }

    cout << dp[n].first;
    return 0;
}

Compilation message (stderr)

segments.cpp: In function 'int main()':
segments.cpp:22:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   22 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
segments.cpp:24:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   24 |         scanf("%d", &a[i]);
      |         ~~~~~^~~~~~~~~~~~~

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