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Submission #1028716

# Submission time Handle Problem Language Result Execution time Memory
1028716 2024-07-20T07:33:40 Z Fatonim Bigger segments (IZhO19_segments) C++17
27 / 100
 1500 ms 73052 KB 
// "We create our own demons"
#include <bits/stdc++.h>

using namespace std;

#ifdef ONPC
#include "debug.h"
#else
#define dbg(...)
#endif

#define int long long
#define ll long long
#define ld long double
#define pi pair<int, int>
// vector
#define sz(a) (int)((a).size())
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define maxel(x) (*max_element(all(x)))
#define minel(x) (*min_element(all(x)))
#define maxpos(x) (max_element(all(x)) - x.begin())
#define minpos(x) (min_element(all(x)) - x.begin())
#define rev(x) (reverse(all(x)))
// bits
#define popcount(n) __builtin_popcountll(n)
#define clz(n) __builtin_clzll(n)
// math
#define sqr(n) ((n) * (n))
#define divup(a, b) (((a) + (b)-1) / (b))
// ostream
#define Fixed(a) cout << fixed << setprecision(12) << a;

template <class T> bool chmin(T& a, const T& b) { return b < a ? a = b, 1 : 0; }
template <class T> bool chmax(T& a, const T& b) { return b > a ? a = b, 1 : 0; }

template <class T> using min_queue = priority_queue<T, vector<T>, greater<T>>;
template <class T> using max_queue = priority_queue<T, vector<T>, less<T>>;

template <class T> using V = vector<T>;
using vi = V<int>;
using vd = V<ld>;
using vb = V<bool>;
using vpi = V<pi>;
using vvi = V<vi>;
using vvb = V<vb>;

const int mod = 1e9 + 7; // 998244353 1e9 + 7
const ll inf = (int)(1e18) + 7;
const int inf_s = 1e9 + 7;
const ld eps = 1e-9;

const int B = 32;
const int N = 3000 + 3;
const int logn = 20;
const int maxn = 5e5 + 7;
/////////////////////////solve/////////////////////////

int a[maxn], p[maxn];
int dp[N][N];

void solve() {
    int n;
    cin >> n;

    for (int i = 1; i <= n; ++i) {
        cin >> a[i];
    }

    for (int i = 1; i <= n; ++i) {
        p[i] = p[i - 1] + a[i];
    }

    for (int i = 1; i <= n; ++i) {
        for (int j = 1; j <= n; ++j) {
            dp[i][j] = -inf;
        }
    }

    for (int i = 1; i <= n; ++i) {
        for (int j = 1; j < i; ++j) {
            // dp[i][j] = dp[i - j][k]
            int sum = p[i] - p[i - j];
            for (int k = 1; k <= i - j; ++k) {
                int cur = p[i - j] - p[i - j - k];
                dbg(cur, sum);
                if (cur > sum) break;
                chmax(dp[i][j], dp[i - j][k] + 1);
            }
            dbg(i, j, dp[i][j]);
        }
        dp[i][i] = 1;
    }

    int ans = 0;
    for (int j = 1; j <= n; ++j) {
        chmax(ans, dp[n][j]);
    }

    cout << ans << "\n";
}

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

#ifdef ONPC
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    freopen("error.txt", "w", stderr);
#endif

    int t = 1;
    //cin >> t;
    for (int i = 1; i <= t; ++i) {
#ifdef ONPC
        cerr << "===========" << i << "===========" << '\n';
#endif
        solve();
    }

#ifdef ONPC
    cerr << endl << "Time " << clock() * 1.0 / CLOCKS_PER_SEC << " sec" << endl;
#endif
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4440 KB Output is correct
11 Correct 1 ms 4440 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4440 KB Output is correct
11 Correct 1 ms 4440 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 17 ms 10328 KB Output is correct
17 Correct 16 ms 10332 KB Output is correct
18 Correct 16 ms 10588 KB Output is correct
19 Correct 10 ms 10344 KB Output is correct
20 Correct 14 ms 9064 KB Output is correct
21 Correct 17 ms 9224 KB Output is correct
22 Correct 10 ms 11096 KB Output is correct
23 Correct 5 ms 10588 KB Output is correct
24 Correct 19 ms 10332 KB Output is correct
25 Correct 16 ms 10584 KB Output is correct
26 Correct 18 ms 11864 KB Output is correct
27 Correct 10 ms 10332 KB Output is correct
28 Correct 16 ms 10332 KB Output is correct
29 Correct 16 ms 10580 KB Output is correct
30 Correct 13 ms 10572 KB Output is correct

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4440 KB Output is correct
11 Correct 1 ms 4440 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 17 ms 10328 KB Output is correct
17 Correct 16 ms 10332 KB Output is correct
18 Correct 16 ms 10588 KB Output is correct
19 Correct 10 ms 10344 KB Output is correct
20 Correct 14 ms 9064 KB Output is correct
21 Correct 17 ms 9224 KB Output is correct
22 Correct 10 ms 11096 KB Output is correct
23 Correct 5 ms 10588 KB Output is correct
24 Correct 19 ms 10332 KB Output is correct
25 Correct 16 ms 10584 KB Output is correct
26 Correct 18 ms 11864 KB Output is correct
27 Correct 10 ms 10332 KB Output is correct
28 Correct 16 ms 10332 KB Output is correct
29 Correct 16 ms 10580 KB Output is correct
30 Correct 13 ms 10572 KB Output is correct
31 Execution timed out 1579 ms 73052 KB Time limit exceeded
32 Halted 0 ms 0 KB -

Subtask #4
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4440 KB Output is correct
11 Correct 1 ms 4440 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 17 ms 10328 KB Output is correct
17 Correct 16 ms 10332 KB Output is correct
18 Correct 16 ms 10588 KB Output is correct
19 Correct 10 ms 10344 KB Output is correct
20 Correct 14 ms 9064 KB Output is correct
21 Correct 17 ms 9224 KB Output is correct
22 Correct 10 ms 11096 KB Output is correct
23 Correct 5 ms 10588 KB Output is correct
24 Correct 19 ms 10332 KB Output is correct
25 Correct 16 ms 10584 KB Output is correct
26 Correct 18 ms 11864 KB Output is correct
27 Correct 10 ms 10332 KB Output is correct
28 Correct 16 ms 10332 KB Output is correct
29 Correct 16 ms 10580 KB Output is correct
30 Correct 13 ms 10572 KB Output is correct
31 Execution timed out 1579 ms 73052 KB Time limit exceeded
32 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4440 KB Output is correct
11 Correct 1 ms 4440 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 17 ms 10328 KB Output is correct
17 Correct 16 ms 10332 KB Output is correct
18 Correct 16 ms 10588 KB Output is correct
19 Correct 10 ms 10344 KB Output is correct
20 Correct 14 ms 9064 KB Output is correct
21 Correct 17 ms 9224 KB Output is correct
22 Correct 10 ms 11096 KB Output is correct
23 Correct 5 ms 10588 KB Output is correct
24 Correct 19 ms 10332 KB Output is correct
25 Correct 16 ms 10584 KB Output is correct
26 Correct 18 ms 11864 KB Output is correct
27 Correct 10 ms 10332 KB Output is correct
28 Correct 16 ms 10332 KB Output is correct
29 Correct 16 ms 10580 KB Output is correct
30 Correct 13 ms 10572 KB Output is correct
31 Execution timed out 1579 ms 73052 KB Time limit exceeded
32 Halted 0 ms 0 KB -