oj.uz

Submission #682173

# Submission time Handle Problem Language Result Execution time Memory
682173 2023-01-16T03:45:11 Z vuavisao Progression (NOI20_progression) C++14
24 / 100
 3000 ms 83536 KB 
#include<bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#define ll long long
using namespace std;

template<typename Lhs, typename Rhs> inline bool Max_self(Lhs &a, Rhs b) { if(b > a) { a = b; return true; } return false; }
template<typename Lhs, typename Rhs> inline bool Min_self(Lhs &a, Rhs b) { if(b < a) { a = b; return true; } return false; }

const ll N = 3e5 + 10;
const ll INF = 1e18;

struct que {
    ll type = 0;
    ll l = 0, r = 0;
    ll s = 0, c = 0;
    que() {};
    friend istream& operator >> (istream& is, que& other) {
        is >> other.type >> other.l >> other.r;
        if(other.type <= 2) is >> other.s >> other.c;
        return is;
    }
};

ll n, q;
ll a[N];
que qq[N];

namespace sub1 {
    bool check() {
        for(ll i = 1; i <= q; ++ i) {
            if(qq[i].l != 1 || qq[i].r != n) return false;
        }
        return true;
    }

    ll res = 1;
    void solve() {
        for(ll i = 1, j; i < n; i = j - 1) {
            j = i + 1;
            ll s = a[j] - a[i];
            while(j <= n && a[j] - a[j - 1] == s) ++ j;
            res = max(res, j - i);
        }
        for(ll i = 1; i <= q; ++ i) {
            const auto& psy = qq[i];
            if(psy.type == 3) cout << res << '\n';
            else if(psy.type == 2) {
                res = n;
            }
        }
    }
}

namespace sub2 {
    void solve() {
        auto get_far = [&] (ll l, ll r) -> ll {
            ll res = 1;
            for(ll i = l, j; i < r; i = j - 1) {
                j = i + 1;
                ll s = a[j] - a[i];
                while(j <= r && a[j] - a[j - 1] == s) ++ j;
                res = max(res, j - i);
            }
            return res;
        };
        for(ll i = 1; i <= q; ++ i) {
            const auto& psy = qq[i];
            ll type = psy.type;
            if(type == 1) {
                ll add[2] = {psy.s, psy.c};
                for(ll i = psy.l; i <= psy.r; ++ i) {
                    a[i] += add[0];
                    add[0] += add[1];
                }
            }
            else if(type == 2) {
                ll add[2] = {psy.s, psy.c};
                for(ll i = psy.l; i <= psy.r; ++ i) {
                    a[i] = add[0];
                    add[0] += add[1];
                }
            }
            else {
//                cout << psy.l << ' ' << psy.r << '\n';
                cout << get_far(psy.l, psy.r) << '\n';
            }
        }
    }
}

namespace sub3 {
    bool check() {
        for(ll i = 1; i <= q; ++ i) {
            if(qq[i].type < 3) return false;
        }
        return true;
    }

    struct Node {
        struct state {
            ll val = 0, len = 0;
            state() {};
            state(ll _val, ll _len) { val = _val; len = _len; };
        };
        state pref = state(), suf = state();
        state sub = state();
        ll len = 0;
        Node() {};
        Node(ll _val, ll _len) {
            pref = state(_val, _len);
            suf = state(_val, _len);
            sub = state(0, 0);
            len = _len;
        }
        Node operator + (const Node& other) const {
            Node res;
            res.pref = this -> pref;
            if(this -> len == this -> pref.len && this -> pref.val == other.pref.val) {
                res.pref.len += other.pref.len;
            }
            res.suf = other.suf;
            if(other.len == other.suf.len && this -> suf.val == other.suf.val) {
                res.suf.len += this -> suf.len;
            }
            if(Max_self(res.sub.len, this -> sub.len)) res.sub = this -> sub;
            if(Max_self(res.sub.len, other.sub.len)) res.sub = other.sub;
            if(Max_self(res.sub.len, this -> suf.len)) res.sub = this -> suf;
            if(Max_self(res.sub.len, other.pref.len)) res.sub = other.pref;
            if(this -> suf.val == other.pref.val && Max_self(res.sub.len, this -> suf.len + other.pref.len)) {
                res.sub.val = this -> suf.val;
            }
            res.len = this -> len + other.len;
            return res;
        }
    };

    Node tree[N << 2];
    ll diff[N];

    void make_first(ll node, ll l, ll r, ll* value) {
        if(l == r) {
            tree[node] = Node(value[l], 1);
            return;
        }
        ll mid = (l + r) >> 1;
        make_first(node << 1, l, mid, value);
        make_first(node << 1 | 1, mid + 1, r, value);
        tree[node] = tree[node << 1] + tree[node << 1 | 1];
    }

    Node query(ll node, ll l, ll r, ll L, ll R) {
//        assert(L <= R && l <= r);
        if(l > r || L > R) assert(false);
        if(L <= l && r <= R) return tree[node];
        ll mid = (l + r) >> 1;
        if(R <= mid) return query(node << 1, l, mid, L, R);
        if(L > mid) return query(node << 1 | 1, mid + 1, r, L, R);
        return query(node << 1, l, mid, L, R) + query(node << 1 | 1, mid + 1, r, L, R);
    }

    void solve() {
        for(ll i = 1; i <= n; ++ i) diff[i] = a[i] - a[i - 1];
        make_first(1, 1, n, diff);
        for(ll i = 1; i <= q; ++ i) {
            const auto& psy = qq[i];
            ll res = 0;
            if(psy.l == psy.r) {
                res = 1;
            }
            else {
                Node tmp = query(1, 1, n, psy.l + 1, psy.r);
                Max_self(res, tmp.pref.len);
                Max_self(res, tmp.sub.len + 1);
                Max_self(res, tmp.suf.len + 1);
                Min_self(res, psy.r - psy.l + 1);
                cout << res << '\n';
            }
        }
    }
}

int32_t main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    if (fopen("Progression.inp", "r")) {
        freopen("Progression.inp", "r", stdin);
        freopen("Progression.out", "w", stdout);
    }
    cin >> n >> q;
    for(ll i = 1; i <= n; ++ i) cin >> a[i];
    for(ll i = 1; i <= q; ++ i) cin >> qq[i];
    if(sub1::check()) {
        sub1::solve();
        return 0;
    }
    if(sub3::check()) {
        sub3::solve();
        return 0;
    }
    sub2::solve();
    return 0;
}

/// Code by vuavisao

Compilation message

Progression.cpp: In function 'int32_t main()':
Progression.cpp:188:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  188 |         freopen("Progression.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Progression.cpp:189:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  189 |         freopen("Progression.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 134 ms 80792 KB Output is correct
2 Correct 97 ms 78064 KB Output is correct
3 Correct 102 ms 78064 KB Output is correct
4 Correct 129 ms 78076 KB Output is correct
5 Correct 98 ms 78072 KB Output is correct
6 Correct 98 ms 78076 KB Output is correct
7 Correct 104 ms 78068 KB Output is correct
8 Correct 31 ms 77780 KB Output is correct
9 Correct 31 ms 77740 KB Output is correct
10 Correct 31 ms 77744 KB Output is correct
11 Correct 134 ms 80792 KB Output is correct
12 Correct 168 ms 80672 KB Output is correct
13 Correct 140 ms 80924 KB Output is correct
14 Correct 137 ms 80920 KB Output is correct
15 Correct 140 ms 80924 KB Output is correct
16 Correct 143 ms 80716 KB Output is correct
17 Correct 139 ms 80660 KB Output is correct
18 Correct 141 ms 80668 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 77820 KB Output is correct
2 Correct 38 ms 77688 KB Output is correct
3 Correct 32 ms 77780 KB Output is correct
4 Correct 33 ms 77824 KB Output is correct
5 Correct 31 ms 77772 KB Output is correct
6 Correct 31 ms 77796 KB Output is correct
7 Correct 31 ms 77772 KB Output is correct
8 Correct 31 ms 77780 KB Output is correct
9 Correct 35 ms 77716 KB Output is correct
10 Correct 34 ms 77772 KB Output is correct
11 Correct 36 ms 77796 KB Output is correct
12 Correct 30 ms 77840 KB Output is correct
13 Correct 32 ms 77788 KB Output is correct
14 Correct 30 ms 77820 KB Output is correct
15 Correct 32 ms 77780 KB Output is correct
16 Correct 30 ms 77780 KB Output is correct
17 Correct 31 ms 77760 KB Output is correct
18 Correct 30 ms 77780 KB Output is correct
19 Correct 32 ms 77712 KB Output is correct
20 Correct 38 ms 77780 KB Output is correct
21 Correct 32 ms 77700 KB Output is correct

Subtask #3
0 / 35.0

# Verdict Execution time Memory Grader output
1 Incorrect 213 ms 83536 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 405 ms 80324 KB Output is correct
2 Correct 123 ms 77940 KB Output is correct
3 Correct 104 ms 77900 KB Output is correct
4 Correct 107 ms 77976 KB Output is correct
5 Correct 106 ms 77888 KB Output is correct
6 Correct 109 ms 77944 KB Output is correct
7 Correct 132 ms 78000 KB Output is correct
8 Correct 31 ms 77780 KB Output is correct
9 Correct 30 ms 77740 KB Output is correct
10 Correct 30 ms 77712 KB Output is correct
11 Execution timed out 3071 ms 80256 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 213 ms 83536 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 134 ms 80792 KB Output is correct
2 Correct 97 ms 78064 KB Output is correct
3 Correct 102 ms 78064 KB Output is correct
4 Correct 129 ms 78076 KB Output is correct
5 Correct 98 ms 78072 KB Output is correct
6 Correct 98 ms 78076 KB Output is correct
7 Correct 104 ms 78068 KB Output is correct
8 Correct 31 ms 77780 KB Output is correct
9 Correct 31 ms 77740 KB Output is correct
10 Correct 31 ms 77744 KB Output is correct
11 Correct 134 ms 80792 KB Output is correct
12 Correct 168 ms 80672 KB Output is correct
13 Correct 140 ms 80924 KB Output is correct
14 Correct 137 ms 80920 KB Output is correct
15 Correct 140 ms 80924 KB Output is correct
16 Correct 143 ms 80716 KB Output is correct
17 Correct 139 ms 80660 KB Output is correct
18 Correct 141 ms 80668 KB Output is correct
19 Correct 32 ms 77820 KB Output is correct
20 Correct 38 ms 77688 KB Output is correct
21 Correct 32 ms 77780 KB Output is correct
22 Correct 33 ms 77824 KB Output is correct
23 Correct 31 ms 77772 KB Output is correct
24 Correct 31 ms 77796 KB Output is correct
25 Correct 31 ms 77772 KB Output is correct
26 Correct 31 ms 77780 KB Output is correct
27 Correct 35 ms 77716 KB Output is correct
28 Correct 34 ms 77772 KB Output is correct
29 Correct 36 ms 77796 KB Output is correct
30 Correct 30 ms 77840 KB Output is correct
31 Correct 32 ms 77788 KB Output is correct
32 Correct 30 ms 77820 KB Output is correct
33 Correct 32 ms 77780 KB Output is correct
34 Correct 30 ms 77780 KB Output is correct
35 Correct 31 ms 77760 KB Output is correct
36 Correct 30 ms 77780 KB Output is correct
37 Correct 32 ms 77712 KB Output is correct
38 Correct 38 ms 77780 KB Output is correct
39 Correct 32 ms 77700 KB Output is correct
40 Incorrect 213 ms 83536 KB Output isn't correct
41 Halted 0 ms 0 KB -