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Submission #989099

# Submission time Handle Problem Language Result Execution time Memory
989099 2024-05-27T14:15:18 Z armashka Bigger segments (IZhO19_segments) C++17
100 / 100
 80 ms 20864 KB 
#include<bits/stdc++.h>

#pragma GCC target("avx2")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

using namespace std;

#define fast ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define file(s) freopen(s".in", "r", stdin);freopen(s".out", "w", stdout);
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
#define pb push_back
#define pf push_front
#define ppb pop_back
#define ft first
#define sd second
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
const int N = 5e5 + 10;
const int M = 2e7 + 5;
const int B = 316;
const ll msize = 2;
const ll mod1 = 1e9 + 7;
const ll mod2 = 998244353;
const long double Phi = acos(-1);
const long long inf = 2e18;
const vector <pair<int, int>> dir = {{-1, 0}, {1, 0}, {0, -1}, {0, 1}};

ll binmul(ll x, ll ti, ll m);
ll binpow(ll x, ll ti, ll m);

ll n, a[N], pref[N];
pair <ll, ll> dp[N];

const void solve() {
    cin >> n;
    for (int i = 1; i <= n; ++ i) cin >> a[i], pref[i] = pref[i - 1] + a[i];

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

    for (int i = 1; i <= n; ++ i) {
        dp[i] = max(dp[i], dp[i - 1]);

        int cnt = dp[i].ft, j = dp[i].sd;
        int l = i + 1, r = n, k = -1;
        while (l <= r) {
            int mid = (l + r) / 2;
            if (pref[mid] - pref[i] >= pref[i] - pref[j - 1]) r = mid - 1, k = mid;
            else l = mid + 1;
        }

        if (k != -1) {
            dp[k] = max(dp[k], {cnt + 1, i + 1});
        }
    }

    cout << dp[n].ft;
}  
                                  
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    srand(time(NULL));

    // file("maze");

    // freopen("input.txt", "r", stdin);
    // freopen("output.txt", "w", stdout);

    int tt = 1;
    // cin >> tt;
    for (int i = 1; i <= tt; ++ i) {
        solve();
    }

    #ifndef ONLINE_JUDGE
    cerr << "\n" << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n";
    #endif

    return 0;
} 


// Template functions
ll binmul(ll x, ll ti, ll m) { ll res = 0;while (ti){if(ti & 1)res += x;x += x;ti >>= 1; x %= m; res %= m;} return res;}
ll binpow(ll x, ll ti, ll m) { ll res = 1;while (ti){if(ti & 1)(res *= x)%=m;(x*=x)%=m;ti >>= 1; x %= m; res %= m;} return res;}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 1 ms 2648 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 1 ms 2648 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2392 KB Output is correct
25 Correct 1 ms 2392 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 0 ms 2396 KB Output is correct
28 Correct 1 ms 2520 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 1 ms 2648 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2392 KB Output is correct
25 Correct 1 ms 2392 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 0 ms 2396 KB Output is correct
28 Correct 1 ms 2520 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct
31 Correct 1 ms 2396 KB Output is correct
32 Correct 1 ms 2396 KB Output is correct
33 Correct 1 ms 2528 KB Output is correct
34 Correct 1 ms 2396 KB Output is correct
35 Correct 1 ms 2528 KB Output is correct
36 Correct 1 ms 2396 KB Output is correct
37 Correct 1 ms 2396 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 1 ms 2392 KB Output is correct
40 Correct 1 ms 2528 KB Output is correct
41 Correct 1 ms 2396 KB Output is correct
42 Correct 1 ms 2396 KB Output is correct
43 Correct 1 ms 2396 KB Output is correct
44 Correct 1 ms 2396 KB Output is correct
45 Correct 1 ms 2396 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 1 ms 2648 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2392 KB Output is correct
25 Correct 1 ms 2392 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 0 ms 2396 KB Output is correct
28 Correct 1 ms 2520 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct
31 Correct 1 ms 2396 KB Output is correct
32 Correct 1 ms 2396 KB Output is correct
33 Correct 1 ms 2528 KB Output is correct
34 Correct 1 ms 2396 KB Output is correct
35 Correct 1 ms 2528 KB Output is correct
36 Correct 1 ms 2396 KB Output is correct
37 Correct 1 ms 2396 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 1 ms 2392 KB Output is correct
40 Correct 1 ms 2528 KB Output is correct
41 Correct 1 ms 2396 KB Output is correct
42 Correct 1 ms 2396 KB Output is correct
43 Correct 1 ms 2396 KB Output is correct
44 Correct 1 ms 2396 KB Output is correct
45 Correct 1 ms 2396 KB Output is correct
46 Correct 7 ms 9564 KB Output is correct
47 Correct 13 ms 9820 KB Output is correct
48 Correct 11 ms 10076 KB Output is correct
49 Correct 10 ms 10108 KB Output is correct
50 Correct 11 ms 10328 KB Output is correct
51 Correct 15 ms 10380 KB Output is correct
52 Correct 6 ms 5468 KB Output is correct
53 Correct 4 ms 5208 KB Output is correct
54 Correct 9 ms 9564 KB Output is correct
55 Correct 11 ms 10332 KB Output is correct
56 Correct 8 ms 9860 KB Output is correct
57 Correct 8 ms 9692 KB Output is correct
58 Correct 9 ms 9816 KB Output is correct
59 Correct 8 ms 9820 KB Output is correct
60 Correct 8 ms 9952 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 1 ms 2648 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2392 KB Output is correct
25 Correct 1 ms 2392 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 0 ms 2396 KB Output is correct
28 Correct 1 ms 2520 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct
31 Correct 1 ms 2396 KB Output is correct
32 Correct 1 ms 2396 KB Output is correct
33 Correct 1 ms 2528 KB Output is correct
34 Correct 1 ms 2396 KB Output is correct
35 Correct 1 ms 2528 KB Output is correct
36 Correct 1 ms 2396 KB Output is correct
37 Correct 1 ms 2396 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 1 ms 2392 KB Output is correct
40 Correct 1 ms 2528 KB Output is correct
41 Correct 1 ms 2396 KB Output is correct
42 Correct 1 ms 2396 KB Output is correct
43 Correct 1 ms 2396 KB Output is correct
44 Correct 1 ms 2396 KB Output is correct
45 Correct 1 ms 2396 KB Output is correct
46 Correct 7 ms 9564 KB Output is correct
47 Correct 13 ms 9820 KB Output is correct
48 Correct 11 ms 10076 KB Output is correct
49 Correct 10 ms 10108 KB Output is correct
50 Correct 11 ms 10328 KB Output is correct
51 Correct 15 ms 10380 KB Output is correct
52 Correct 6 ms 5468 KB Output is correct
53 Correct 4 ms 5208 KB Output is correct
54 Correct 9 ms 9564 KB Output is correct
55 Correct 11 ms 10332 KB Output is correct
56 Correct 8 ms 9860 KB Output is correct
57 Correct 8 ms 9692 KB Output is correct
58 Correct 9 ms 9816 KB Output is correct
59 Correct 8 ms 9820 KB Output is correct
60 Correct 8 ms 9952 KB Output is correct
61 Correct 35 ms 18008 KB Output is correct
62 Correct 42 ms 18012 KB Output is correct
63 Correct 58 ms 18452 KB Output is correct
64 Correct 52 ms 20564 KB Output is correct
65 Correct 47 ms 20864 KB Output is correct
66 Correct 80 ms 20820 KB Output is correct
67 Correct 48 ms 17692 KB Output is correct
68 Correct 27 ms 13136 KB Output is correct
69 Correct 39 ms 16988 KB Output is correct
70 Correct 49 ms 20756 KB Output is correct
71 Correct 32 ms 18000 KB Output is correct
72 Correct 39 ms 18268 KB Output is correct
73 Correct 38 ms 19036 KB Output is correct
74 Correct 37 ms 19404 KB Output is correct
75 Correct 38 ms 19188 KB Output is correct