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Submission #240444

# Submission time Handle Problem Language Result Execution time Memory
240444 2020-06-19T16:27:41 Z valerikk Strange Device (APIO19_strange_device) C++14
45 / 100
 5000 ms 251168 KB 
#include<bits/stdc++.h>
using namespace std;

#define int long long
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<ld, ld> pld;

#define x first
#define y second
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define mt make_tuple

#define len(a) (int)(a).size()
#define all(a) (a).begin(), (a).end()
#define rall(a) (a).rbegin(), (a).rend()

bool inter(pii a, pii b) {
    return max(a.x, b.x) <= min(a.y, b.y);
}

pii unite(pii a, pii b) {
    assert(inter(a, b));
    return {min(a.x, b.x), max(a.y, b.y)};
}

struct Event {
    int x, type, p;

    Event() {}
    Event(int x, int type, int p) : x(x), type(type), p(p) {}
};

bool operator<(const Event& a, const Event& b) {
    return mt(a.x, a.type) < mt(b.x, b.type);
}

vector<Event> evs;
vector<pii> good;

void add_ev(int l, int r, int p) {
    evs.eb(l, 0, p);
    evs.eb(r + 1, 1, p);
}

bool check(int x) {
    int l = -1, r = len(good);
    while (r - l > 1) {
        int mid = (l + r) / 2;
        if (good[mid].y >= x) r = mid; else l = mid;
    }
    if (r == len(good)) return 0;
    return good[r].x <= x;
}

int32_t main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n, a, b;
    cin >> n >> a >> b;
    int period = a / __gcd(a, b + 1);
    for (int i = 0; i < n; i++) {
        int l, r;
        cin >> l >> r;
        int block_l = l / b, block_r = r / b;
        if (block_l == block_r) {
            add_ev(l % b, r % b, block_l % period);
        } else {
            if (block_r - block_l != 1) {
                int L = (block_l + 1) % period, R = (block_r - 1) % period;
                if (L <= R) {
                    good.eb(L, R);
                } else {
                    good.eb(0, R);
                    good.eb(L, period - 1);
                }
            }
            add_ev(l % b, b - 1, block_l % period);
            add_ev(0, r % b, block_r % period);
        }
    }
    sort(all(evs));
    sort(all(good));
    vector<pii> st;
    for (auto val : good) {
        if (!st.empty() && inter(val, st.back())) st.back() = unite(st.back(), val); else st.pb(val);
    }
    good = st;
    map<int, int> cnt;
    int have = 0, ans = 0;
    for (auto val : good) ans += (val.y - val.x + 1) * b;
    for (int i = 0; i + 1 < len(evs); i++) {
        if (!check(evs[i].p)) {
            if (evs[i].type == 0) {
                cnt[evs[i].p]++;
                if (cnt[evs[i].p] == 1) have++;
            } else {
                cnt[evs[i].p]--;
                if (cnt[evs[i].p] == 0) have--;
            }
        }
        ans += have * (evs[i + 1].x - evs[i].x);
    }
    cout << ans;
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 15 ms 1276 KB Output is correct
3 Correct 13 ms 1404 KB Output is correct
4 Correct 6 ms 384 KB Output is correct
5 Correct 8 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 8 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 14 ms 1404 KB Output is correct
17 Correct 78 ms 6756 KB Output is correct
18 Correct 5 ms 384 KB Output is correct

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 436 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Incorrect 4 ms 512 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 6 ms 512 KB Output is correct
3 Correct 6 ms 512 KB Output is correct
4 Correct 7 ms 512 KB Output is correct
5 Correct 758 ms 126624 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 1136 ms 110324 KB Output is correct
3 Correct 2608 ms 251168 KB Output is correct
4 Correct 2529 ms 251136 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 1136 ms 110324 KB Output is correct
3 Correct 2608 ms 251168 KB Output is correct
4 Correct 2529 ms 251136 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 2628 ms 188580 KB Output is correct
7 Correct 1081 ms 68564 KB Output is correct
8 Correct 2608 ms 188560 KB Output is correct
9 Correct 2707 ms 188584 KB Output is correct

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 1136 ms 110324 KB Output is correct
3 Correct 2608 ms 251168 KB Output is correct
4 Correct 2529 ms 251136 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 185 ms 16196 KB Output is correct
7 Correct 262 ms 19252 KB Output is correct
8 Correct 256 ms 19336 KB Output is correct
9 Correct 263 ms 19336 KB Output is correct
10 Correct 223 ms 13388 KB Output is correct
11 Correct 359 ms 19464 KB Output is correct
12 Correct 283 ms 19332 KB Output is correct
13 Correct 233 ms 19336 KB Output is correct
14 Correct 70 ms 6760 KB Output is correct
15 Correct 239 ms 16344 KB Output is correct
16 Correct 108 ms 9232 KB Output is correct
17 Correct 313 ms 22820 KB Output is correct
18 Execution timed out 5064 ms 195160 KB Time limit exceeded
19 Halted 0 ms 0 KB -

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 77 ms 6628 KB Output is correct
3 Correct 106 ms 6632 KB Output is correct
4 Correct 2319 ms 99068 KB Output is correct
5 Correct 119 ms 6640 KB Output is correct
6 Correct 118 ms 6628 KB Output is correct
7 Correct 133 ms 6624 KB Output is correct
8 Correct 134 ms 7492 KB Output is correct
9 Correct 132 ms 7408 KB Output is correct
10 Correct 87 ms 6632 KB Output is correct
11 Correct 73 ms 6632 KB Output is correct
12 Correct 78 ms 6628 KB Output is correct
13 Correct 121 ms 6628 KB Output is correct
14 Correct 981 ms 49912 KB Output is correct
15 Correct 87 ms 6632 KB Output is correct
16 Correct 797 ms 49772 KB Output is correct
17 Correct 2351 ms 98936 KB Output is correct
18 Correct 5 ms 384 KB Output is correct

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 15 ms 1276 KB Output is correct
3 Correct 13 ms 1404 KB Output is correct
4 Correct 6 ms 384 KB Output is correct
5 Correct 8 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 8 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 14 ms 1404 KB Output is correct
17 Correct 78 ms 6756 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 436 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Incorrect 4 ms 512 KB Output isn't correct
23 Halted 0 ms 0 KB -