oj.uz

Submission #601998

# Submission time Handle Problem Language Result Execution time Memory
601998 2022-07-22T13:19:31 Z verngutz Progression (NOI20_progression) C++17
50 / 100
 3000 ms 41036 KB 
#include <bits/stdc++.h>
#define err(args...) {}
#ifdef DEBUG
#include "_debug.cpp"
#endif
using namespace std;
using ll = long long;
using ld = long double;
template <typename T> using lim = numeric_limits<T>;
template <typename T> istream& operator>>(istream& is, vector<T>& a) { for(T& x : a) { is >> x; } return is; }
template <typename X, typename Y> istream& operator>>(istream& is, pair<X, Y>& p) { return is >> p.first >> p.second; }
vector<ll> a;
struct segtree {
    segtree* l;
    segtree* r;
    int L, R;
    int longest_eq_suff, longest_eq_pref, longest, longest_start_index;
    segtree(int L, int R): L(L), R(R) {
        if(R - L > 1) {
            int M = (L + R) / 2;
            l = new segtree(L, M);
            r = new segtree(M, R);
        } else {
            l = nullptr;
            r = nullptr;
        }
    }
    void build() {
        if(R - L > 1) {
            int M = (L + R) / 2;
            r->build();
            l->build();
            longest_eq_suff = r->longest_eq_suff;
            if(r->longest_eq_suff == r->len() && l->back() == r->front()) {
                longest_eq_suff += l->longest_eq_suff;
            }
            longest_eq_pref = l->longest_eq_pref;
            if(l->longest_eq_pref == l->len() && l->back() == r->front()) {
                longest_eq_pref += r->longest_eq_pref;
            }
            int crossing = l->back() == r->front() ? l->longest_eq_suff + r->longest_eq_pref : 0;
            longest = max({l->longest, r->longest, crossing});
            if(longest == r->longest) {
                longest_start_index = r->longest_start_index;
            } else if(longest == crossing) {
                longest_start_index = M - l->longest_eq_suff;
            } else {
                longest_start_index = l->longest_start_index;
            }
        } else {
            longest_eq_suff = 1;
            longest_eq_pref = 1;
            longest = 1;
            longest_start_index = L;
        }
    }
    int front() {
        return a[L];
    }
    int back() {
        return a[R - 1];
    }
    int len() {
        return R - L;
    }
    pair<int, int> query(int s, int e) {
        if(s <= L and R <= e) {
            return {longest, longest_start_index};
        } else if(R <= s or e <= L) {
            return {0, -1};
        } else {
            int M = (L + R) / 2;
            auto [L_longest, L_start_index] = l->query(s, e);
            auto [R_longest, R_start_index] = r->query(s, e);
            int crossing = l->back() == r->front() 
                ? min(l->longest_eq_suff, M - s) + min(r->longest_eq_pref, e - M)
                : 0;
            int crossing_start_index = l->back() == r->front() 
                ? max(M - l->longest_eq_suff, s)
                : -1;
            int ans = max({L_longest, R_longest, crossing});
            int index;
            if(ans == R_longest) {
                index = R_start_index;
            } else if(ans == crossing) {
                index = crossing_start_index;
            } else {
                index = max(L_start_index, s);
            }
            return {ans, index};
        }
    }
    ~segtree() {
        delete l;
        delete r;
    }
};
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n, q;
    cin >> n >> q;
    vector<ll> d(n);
    cin >> d;
    a.resize(n);
    adjacent_difference(d.begin(), d.end(), a.begin());
    segtree st(0, n);
    st.build();
    while(q--) {
        int t;
        cin >> t;
        if(t == 1) {
            int L, R, S, C;
            cin >> L >> R >> S >> C;
            L--, R--;
            for(int i = L; i <= R; i++) {
                d[i] += S + (i - L) * C;
            }
            adjacent_difference(d.begin(), d.end(), a.begin());
            st.build();
        } else if(t == 2) {
            int L, R, S, C;
            cin >> L >> R >> S >> C;
            L--, R--;
            for(int i = L; i <= R; i++) {
                d[i] = S + (i - L) * C;
            }
            adjacent_difference(d.begin(), d.end(), a.begin());
            st.build();
        } else {
            int L, R;
            cin >> L >> R;
            L--, R--;
            auto [longest, longest_start_index] = st.query(L, R + 1);
            cout << longest + (longest_start_index != L) << endl;
        }
    }
    return 0;
}

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3039 ms 33136 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 340 KB Output is correct
2 Correct 2 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 2 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 15 ms 340 KB Output is correct
9 Correct 13 ms 340 KB Output is correct
10 Correct 11 ms 340 KB Output is correct
11 Correct 6 ms 340 KB Output is correct
12 Correct 13 ms 340 KB Output is correct
13 Correct 6 ms 340 KB Output is correct
14 Correct 7 ms 340 KB Output is correct
15 Correct 12 ms 340 KB Output is correct
16 Correct 15 ms 340 KB Output is correct
17 Correct 13 ms 340 KB Output is correct
18 Correct 14 ms 340 KB Output is correct
19 Correct 2 ms 212 KB Output is correct
20 Correct 2 ms 212 KB Output is correct
21 Correct 2 ms 212 KB Output is correct

Subtask #3
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 703 ms 37848 KB Output is correct
2 Correct 440 ms 2892 KB Output is correct
3 Correct 447 ms 3000 KB Output is correct
4 Correct 447 ms 2900 KB Output is correct
5 Correct 482 ms 3140 KB Output is correct
6 Correct 462 ms 3220 KB Output is correct
7 Correct 481 ms 3064 KB Output is correct
8 Correct 2 ms 212 KB Output is correct
9 Correct 2 ms 324 KB Output is correct
10 Correct 3 ms 212 KB Output is correct
11 Correct 857 ms 38880 KB Output is correct
12 Correct 695 ms 40200 KB Output is correct
13 Correct 761 ms 38880 KB Output is correct
14 Correct 750 ms 38924 KB Output is correct
15 Correct 723 ms 40212 KB Output is correct
16 Correct 765 ms 40828 KB Output is correct
17 Correct 748 ms 41036 KB Output is correct
18 Correct 751 ms 40816 KB Output is correct
19 Correct 722 ms 40284 KB Output is correct
20 Correct 729 ms 40316 KB Output is correct
21 Correct 697 ms 40340 KB Output is correct

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3065 ms 33132 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 703 ms 37848 KB Output is correct
2 Correct 440 ms 2892 KB Output is correct
3 Correct 447 ms 3000 KB Output is correct
4 Correct 447 ms 2900 KB Output is correct
5 Correct 482 ms 3140 KB Output is correct
6 Correct 462 ms 3220 KB Output is correct
7 Correct 481 ms 3064 KB Output is correct
8 Correct 2 ms 212 KB Output is correct
9 Correct 2 ms 324 KB Output is correct
10 Correct 3 ms 212 KB Output is correct
11 Correct 857 ms 38880 KB Output is correct
12 Correct 695 ms 40200 KB Output is correct
13 Correct 761 ms 38880 KB Output is correct
14 Correct 750 ms 38924 KB Output is correct
15 Correct 723 ms 40212 KB Output is correct
16 Correct 765 ms 40828 KB Output is correct
17 Correct 748 ms 41036 KB Output is correct
18 Correct 751 ms 40816 KB Output is correct
19 Correct 722 ms 40284 KB Output is correct
20 Correct 729 ms 40316 KB Output is correct
21 Correct 697 ms 40340 KB Output is correct
22 Execution timed out 3070 ms 35536 KB Time limit exceeded
23 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3039 ms 33136 KB Time limit exceeded
2 Halted 0 ms 0 KB -