Submission #1066064

#	Time	Username	Problem	Language	Result	Execution time	Memory
1066064		manhlinh1501	Bigger segments (IZhO19_segments)	C++17	0 / 100	1 ms	2516 KiB

segments

#include <bits/stdc++.h>
using namespace std;
using i64 = long long;
const int MAXN = 5e5 + 5;

int N;
int a[MAXN];

namespace subtask3 {
    const int MAXN = 3e3 + 5;

    int dp[MAXN][MAXN];
    i64 prefix[MAXN];

    void solution() {
        for(int i = 1; i <= N; i++) prefix[i] = prefix[i - 1] + a[i];
        int ans = 0;
        for(int i = 1; i <= N; i++) {
            int cnt = 0;
            i64 cur = prefix[i];

            for(int j = i; j <= N; j++) {
                cnt++;
                int z = j;
                while(z <= N and prefix[z] - prefix[j] < cur)
                    z++;
                cur = prefix[z] - prefix[j];
                j = z - 1;
            }
            ans = max(ans, cnt);
        }
        cout << ans;
    }
}
signed main() {
#define TASK "code"

    if (fopen(TASK ".inp", "r")) {
        freopen(TASK ".inp", "r", stdin);
        freopen(TASK ".out", "w", stdout);
    }

    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin >> N;
    for(int i = 1; i <= N; i++) cin >> a[i];
    subtask3::solution();
    return (0 ^ 0);
}

/**
4
2 3 1 7
**/

/**
5
6 2 3 9 13
**/

/**
3
3 1 2
**/

Compilation message (stderr)

segments.cpp: In function 'int main()':
segments.cpp:39:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |         freopen(TASK ".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
segments.cpp:40:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |         freopen(TASK ".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

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