oj.uz

Submission #682178

# Submission time Handle Problem Language Result Execution time Memory
682178 2023-01-16T03:59:08 Z vuavisao Progression (NOI20_progression) C++14
59 / 100
 3000 ms 90264 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;
            int len_pref = min(this -> len - 1, this -> suf.len);
            if(Max_self(res.sub.len, len_pref)) res.sub.val = this -> suf.val;
            int len_suf = min(other.len - 1, other.pref.len);
            if(Max_self(res.sub.len, len_suf)) res.sub.val = other.pref.val;
            if(this -> suf.val == other.pref.val && Max_self(res.sub.len, len_pref + len_suf)) {
                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;
            Node tmp = query(1, 1, n, psy.l, psy.r);
            Max_self(res, tmp.pref.len);
//            cout << res << '\n';
            Max_self(res, tmp.sub.len + 1);
//            cout << res << '\n';
            Max_self(res, tmp.suf.len + 1);
//            cout << res << '\n';
            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 147 ms 80780 KB Output is correct
2 Correct 116 ms 78068 KB Output is correct
3 Correct 97 ms 78088 KB Output is correct
4 Correct 111 ms 78076 KB Output is correct
5 Correct 103 ms 78068 KB Output is correct
6 Correct 97 ms 78140 KB Output is correct
7 Correct 98 ms 78068 KB Output is correct
8 Correct 33 ms 77744 KB Output is correct
9 Correct 34 ms 77780 KB Output is correct
10 Correct 39 ms 77768 KB Output is correct
11 Correct 148 ms 80788 KB Output is correct
12 Correct 140 ms 80660 KB Output is correct
13 Correct 148 ms 80916 KB Output is correct
14 Correct 143 ms 81060 KB Output is correct
15 Correct 144 ms 81000 KB Output is correct
16 Correct 137 ms 80712 KB Output is correct
17 Correct 139 ms 80660 KB Output is correct
18 Correct 149 ms 80700 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 77828 KB Output is correct
2 Correct 34 ms 77776 KB Output is correct
3 Correct 32 ms 77780 KB Output is correct
4 Correct 33 ms 77708 KB Output is correct
5 Correct 32 ms 77772 KB Output is correct
6 Correct 33 ms 77780 KB Output is correct
7 Correct 33 ms 77780 KB Output is correct
8 Correct 35 ms 77900 KB Output is correct
9 Correct 33 ms 77756 KB Output is correct
10 Correct 33 ms 77800 KB Output is correct
11 Correct 32 ms 77772 KB Output is correct
12 Correct 33 ms 77740 KB Output is correct
13 Correct 33 ms 77744 KB Output is correct
14 Correct 33 ms 77744 KB Output is correct
15 Correct 33 ms 77796 KB Output is correct
16 Correct 39 ms 77736 KB Output is correct
17 Correct 37 ms 77732 KB Output is correct
18 Correct 35 ms 77768 KB Output is correct
19 Correct 31 ms 77712 KB Output is correct
20 Correct 33 ms 77712 KB Output is correct
21 Correct 32 ms 77724 KB Output is correct

Subtask #3
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 207 ms 83500 KB Output is correct
2 Correct 116 ms 78380 KB Output is correct
3 Correct 102 ms 78320 KB Output is correct
4 Correct 97 ms 78324 KB Output is correct
5 Correct 104 ms 78452 KB Output is correct
6 Correct 102 ms 78380 KB Output is correct
7 Correct 100 ms 78452 KB Output is correct
8 Correct 33 ms 77780 KB Output is correct
9 Correct 34 ms 77796 KB Output is correct
10 Correct 38 ms 77892 KB Output is correct
11 Correct 246 ms 83276 KB Output is correct
12 Correct 229 ms 89600 KB Output is correct
13 Correct 281 ms 88108 KB Output is correct
14 Correct 245 ms 88204 KB Output is correct
15 Correct 215 ms 89512 KB Output is correct
16 Correct 288 ms 90248 KB Output is correct
17 Correct 270 ms 90264 KB Output is correct
18 Correct 268 ms 90200 KB Output is correct
19 Correct 211 ms 89468 KB Output is correct
20 Correct 235 ms 89484 KB Output is correct
21 Correct 208 ms 89472 KB Output is correct

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 360 ms 80476 KB Output is correct
2 Correct 104 ms 77940 KB Output is correct
3 Correct 106 ms 77952 KB Output is correct
4 Correct 104 ms 77960 KB Output is correct
5 Correct 116 ms 77936 KB Output is correct
6 Correct 124 ms 77940 KB Output is correct
7 Correct 105 ms 77984 KB Output is correct
8 Correct 33 ms 77760 KB Output is correct
9 Correct 35 ms 77904 KB Output is correct
10 Correct 35 ms 77780 KB Output is correct
11 Execution timed out 3072 ms 80440 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 207 ms 83500 KB Output is correct
2 Correct 116 ms 78380 KB Output is correct
3 Correct 102 ms 78320 KB Output is correct
4 Correct 97 ms 78324 KB Output is correct
5 Correct 104 ms 78452 KB Output is correct
6 Correct 102 ms 78380 KB Output is correct
7 Correct 100 ms 78452 KB Output is correct
8 Correct 33 ms 77780 KB Output is correct
9 Correct 34 ms 77796 KB Output is correct
10 Correct 38 ms 77892 KB Output is correct
11 Correct 246 ms 83276 KB Output is correct
12 Correct 229 ms 89600 KB Output is correct
13 Correct 281 ms 88108 KB Output is correct
14 Correct 245 ms 88204 KB Output is correct
15 Correct 215 ms 89512 KB Output is correct
16 Correct 288 ms 90248 KB Output is correct
17 Correct 270 ms 90264 KB Output is correct
18 Correct 268 ms 90200 KB Output is correct
19 Correct 211 ms 89468 KB Output is correct
20 Correct 235 ms 89484 KB Output is correct
21 Correct 208 ms 89472 KB Output is correct
22 Execution timed out 3041 ms 89644 KB Time limit exceeded
23 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 147 ms 80780 KB Output is correct
2 Correct 116 ms 78068 KB Output is correct
3 Correct 97 ms 78088 KB Output is correct
4 Correct 111 ms 78076 KB Output is correct
5 Correct 103 ms 78068 KB Output is correct
6 Correct 97 ms 78140 KB Output is correct
7 Correct 98 ms 78068 KB Output is correct
8 Correct 33 ms 77744 KB Output is correct
9 Correct 34 ms 77780 KB Output is correct
10 Correct 39 ms 77768 KB Output is correct
11 Correct 148 ms 80788 KB Output is correct
12 Correct 140 ms 80660 KB Output is correct
13 Correct 148 ms 80916 KB Output is correct
14 Correct 143 ms 81060 KB Output is correct
15 Correct 144 ms 81000 KB Output is correct
16 Correct 137 ms 80712 KB Output is correct
17 Correct 139 ms 80660 KB Output is correct
18 Correct 149 ms 80700 KB Output is correct
19 Correct 34 ms 77828 KB Output is correct
20 Correct 34 ms 77776 KB Output is correct
21 Correct 32 ms 77780 KB Output is correct
22 Correct 33 ms 77708 KB Output is correct
23 Correct 32 ms 77772 KB Output is correct
24 Correct 33 ms 77780 KB Output is correct
25 Correct 33 ms 77780 KB Output is correct
26 Correct 35 ms 77900 KB Output is correct
27 Correct 33 ms 77756 KB Output is correct
28 Correct 33 ms 77800 KB Output is correct
29 Correct 32 ms 77772 KB Output is correct
30 Correct 33 ms 77740 KB Output is correct
31 Correct 33 ms 77744 KB Output is correct
32 Correct 33 ms 77744 KB Output is correct
33 Correct 33 ms 77796 KB Output is correct
34 Correct 39 ms 77736 KB Output is correct
35 Correct 37 ms 77732 KB Output is correct
36 Correct 35 ms 77768 KB Output is correct
37 Correct 31 ms 77712 KB Output is correct
38 Correct 33 ms 77712 KB Output is correct
39 Correct 32 ms 77724 KB Output is correct
40 Correct 207 ms 83500 KB Output is correct
41 Correct 116 ms 78380 KB Output is correct
42 Correct 102 ms 78320 KB Output is correct
43 Correct 97 ms 78324 KB Output is correct
44 Correct 104 ms 78452 KB Output is correct
45 Correct 102 ms 78380 KB Output is correct
46 Correct 100 ms 78452 KB Output is correct
47 Correct 33 ms 77780 KB Output is correct
48 Correct 34 ms 77796 KB Output is correct
49 Correct 38 ms 77892 KB Output is correct
50 Correct 246 ms 83276 KB Output is correct
51 Correct 229 ms 89600 KB Output is correct
52 Correct 281 ms 88108 KB Output is correct
53 Correct 245 ms 88204 KB Output is correct
54 Correct 215 ms 89512 KB Output is correct
55 Correct 288 ms 90248 KB Output is correct
56 Correct 270 ms 90264 KB Output is correct
57 Correct 268 ms 90200 KB Output is correct
58 Correct 211 ms 89468 KB Output is correct
59 Correct 235 ms 89484 KB Output is correct
60 Correct 208 ms 89472 KB Output is correct
61 Correct 360 ms 80476 KB Output is correct
62 Correct 104 ms 77940 KB Output is correct
63 Correct 106 ms 77952 KB Output is correct
64 Correct 104 ms 77960 KB Output is correct
65 Correct 116 ms 77936 KB Output is correct
66 Correct 124 ms 77940 KB Output is correct
67 Correct 105 ms 77984 KB Output is correct
68 Correct 33 ms 77760 KB Output is correct
69 Correct 35 ms 77904 KB Output is correct
70 Correct 35 ms 77780 KB Output is correct
71 Execution timed out 3072 ms 80440 KB Time limit exceeded
72 Halted 0 ms 0 KB -