oj.uz

Submission #527651

# Submission time Handle Problem Language Result Execution time Memory
527651 2022-02-17T22:04:07 Z Olympia Strange Device (APIO19_strange_device) C++17
100 / 100
 2235 ms 63776 KB 
#include <cmath>
#include <cassert>
#include <iostream>
#include <set>
#include <climits>
#include <algorithm>
#include <vector>
#include <iomanip>
#include <type_traits>
#include <string>
#include <queue>
#include <map>

#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("Ofast")
#pragma GCC optimization ("unroll-loops")
using namespace std;
class Intervals {
public:
    set<pair<int64_t,int64_t>> intervals;
    void print () {
        for (auto& p: intervals) {
            cout << p.first << " " << p.second << '\n';
        }
        cout << '\n';
    }
    pair<int64_t,int64_t> leftIntersect (pair<int64_t,int64_t> p) {
        auto it = intervals.upper_bound({p.first + 1, -1});
        if (it == intervals.begin()) {
            return {-1, -1};
        }
        it--;
        pair<int64_t,int64_t> q = *it;
        if (q.second < p.first) {
            return {-1, -1};
        }
        return q;
    }
    pair<int64_t,int64_t> rightIntersect (pair<int64_t,int64_t> p) {
        auto it = intervals.upper_bound({p.second + 1, -1});
        if (it == intervals.begin()) {
            return {-1, -1};
        }
        it--;
        pair<int64_t,int64_t> q = *it;
        if (q.first > p.second) {
            return {-1, -1};
        }
        if (q.first < p.first) {
            return {-1, -1};
        }
        return q;
    }
    bool willChange (pair<int64_t,int64_t> p) {
        pair<int64_t,int64_t> q = leftIntersect(p);
        if (q.first < 0 && q.second < 0) {
            return true;
        }
        if (q.first <= p.first && q.second >= p.second) {
            return false;
        }
        return true;
    }
    pair<int64_t,int64_t> update_left (pair<int64_t,int64_t> p) {
        pair<int64_t,int64_t> q = leftIntersect(p);
        if (q.first == -1 && q.second == -1) {
            return p;
        }
        if (q.second < p.first) {
            return p;
        }
        if (intervals.count(q)) intervals.erase(q);
        return {q.first, p.second};
    }
    pair<int64_t,int64_t> update_right (pair<int64_t,int64_t> p) {
        pair<int64_t,int64_t> q = rightIntersect(p);
        if (q.first == -1 && q.second == -1) {
            return p;
        }
        if (q.first > p.second) {
            return p;
        }
        if (intervals.count(q)) intervals.erase(q);
        return {p.first, q.second};
    }
    void erase_in_between (pair<int64_t,int64_t> p) {
        auto it = intervals.lower_bound({p.first, -1});
        set<pair<int64_t,int64_t>> to_erase;
        while (it != intervals.end()) {
            if ((*it).second < p.second) {
                to_erase.insert(*it);
            } else {
                break;
            }
            it++;
        }
        for (auto& q: to_erase) {
            intervals.erase(q);
        }
    }
    void add_interval (pair<int64_t,int64_t> p) {
        if (!willChange(p)) {
            return;
        }
        erase_in_between(p);
        pair<int64_t,int64_t> new_p = update_left(p);
        pair<int64_t,int64_t> new_p1 = update_right(new_p);
        intervals.insert(new_p1);
    }
};
int64_t gcd (int64_t a, int64_t b) {
    if (!a || !b) return max(a,b);
    return gcd(max(a,b) % min(a,b), min(a,b));
}
int main () {
    int N;
    int64_t A, B;
    cin >> N >> A >> B;
    A /= gcd(A, B + 1);
    int64_t prod;
    if (A < 1e18/B) {
        prod = A * B;
    } else {
        prod = 1e18;
    }
    Intervals myInterval;
    for (int i = 0; i < N; i++) {
        int64_t x, y;
        cin >> x >> y;
        if (abs(y - x) >= prod) {
            myInterval.add_interval({0, prod - 1});
            continue;
        }
        x %= (prod), y %= (prod);
        if (x <= y) {
            //cout << "T1\n";
            myInterval.add_interval({x, y});
        } else {
            //cout << "T2\n";
            swap(x, y);
            myInterval.add_interval({0, x});
            myInterval.add_interval({y, prod - 1});
        }
    }
//    myInterval.print();
    int64_t ans = 0;
    for (auto& p: myInterval.intervals) {
        ans += p.second - p.first + 1;
    }
    cout << ans << '\n';
}

Compilation message

strange_device.cpp:15: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
   15 | #pragma GCC optimization ("O3")
      | 
strange_device.cpp:16: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
   16 | #pragma GCC optimization ("Ofast")
      | 
strange_device.cpp:17: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
   17 | #pragma GCC optimization ("unroll-loops")
      |

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 16 ms 1172 KB Output is correct
3 Correct 16 ms 1228 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 288 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 288 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 16 ms 1196 KB Output is correct
17 Correct 176 ms 7120 KB Output is correct
18 Correct 0 ms 204 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 2 ms 332 KB Output is correct
3 Correct 2 ms 332 KB Output is correct
4 Correct 2 ms 332 KB Output is correct
5 Correct 861 ms 1048 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1788 ms 63580 KB Output is correct
3 Correct 1841 ms 63520 KB Output is correct
4 Correct 2013 ms 63536 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1788 ms 63580 KB Output is correct
3 Correct 1841 ms 63520 KB Output is correct
4 Correct 2013 ms 63536 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1796 ms 63460 KB Output is correct
7 Correct 1893 ms 63540 KB Output is correct
8 Correct 1817 ms 63736 KB Output is correct
9 Correct 2129 ms 63556 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1788 ms 63580 KB Output is correct
3 Correct 1841 ms 63520 KB Output is correct
4 Correct 2013 ms 63536 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 167 ms 7132 KB Output is correct
7 Correct 165 ms 7028 KB Output is correct
8 Correct 165 ms 7132 KB Output is correct
9 Correct 174 ms 7132 KB Output is correct
10 Correct 170 ms 7016 KB Output is correct
11 Correct 159 ms 7044 KB Output is correct
12 Correct 167 ms 7112 KB Output is correct
13 Correct 180 ms 7084 KB Output is correct
14 Correct 161 ms 7088 KB Output is correct
15 Correct 200 ms 7076 KB Output is correct
16 Correct 190 ms 7120 KB Output is correct
17 Correct 185 ms 7212 KB Output is correct
18 Correct 1789 ms 63388 KB Output is correct
19 Correct 1958 ms 63364 KB Output is correct
20 Correct 2074 ms 63192 KB Output is correct
21 Correct 166 ms 6856 KB Output is correct
22 Correct 175 ms 6916 KB Output is correct
23 Correct 401 ms 764 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 180 ms 6872 KB Output is correct
3 Correct 196 ms 6980 KB Output is correct
4 Correct 1930 ms 63776 KB Output is correct
5 Correct 190 ms 7068 KB Output is correct
6 Correct 190 ms 7044 KB Output is correct
7 Correct 229 ms 7044 KB Output is correct
8 Correct 184 ms 6940 KB Output is correct
9 Correct 176 ms 6980 KB Output is correct
10 Correct 168 ms 6932 KB Output is correct
11 Correct 171 ms 6980 KB Output is correct
12 Correct 171 ms 6912 KB Output is correct
13 Correct 190 ms 6976 KB Output is correct
14 Correct 2064 ms 63712 KB Output is correct
15 Correct 170 ms 6276 KB Output is correct
16 Correct 1779 ms 63052 KB Output is correct
17 Correct 1754 ms 63412 KB Output is correct
18 Correct 0 ms 204 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 16 ms 1172 KB Output is correct
3 Correct 16 ms 1228 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 288 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 288 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 16 ms 1196 KB Output is correct
17 Correct 176 ms 7120 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 0 ms 204 KB Output is correct
23 Correct 0 ms 204 KB Output is correct
24 Correct 0 ms 204 KB Output is correct
25 Correct 2 ms 332 KB Output is correct
26 Correct 2 ms 332 KB Output is correct
27 Correct 2 ms 332 KB Output is correct
28 Correct 861 ms 1048 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 1788 ms 63580 KB Output is correct
31 Correct 1841 ms 63520 KB Output is correct
32 Correct 2013 ms 63536 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 1796 ms 63460 KB Output is correct
35 Correct 1893 ms 63540 KB Output is correct
36 Correct 1817 ms 63736 KB Output is correct
37 Correct 2129 ms 63556 KB Output is correct
38 Correct 0 ms 204 KB Output is correct
39 Correct 167 ms 7132 KB Output is correct
40 Correct 165 ms 7028 KB Output is correct
41 Correct 165 ms 7132 KB Output is correct
42 Correct 174 ms 7132 KB Output is correct
43 Correct 170 ms 7016 KB Output is correct
44 Correct 159 ms 7044 KB Output is correct
45 Correct 167 ms 7112 KB Output is correct
46 Correct 180 ms 7084 KB Output is correct
47 Correct 161 ms 7088 KB Output is correct
48 Correct 200 ms 7076 KB Output is correct
49 Correct 190 ms 7120 KB Output is correct
50 Correct 185 ms 7212 KB Output is correct
51 Correct 1789 ms 63388 KB Output is correct
52 Correct 1958 ms 63364 KB Output is correct
53 Correct 2074 ms 63192 KB Output is correct
54 Correct 166 ms 6856 KB Output is correct
55 Correct 175 ms 6916 KB Output is correct
56 Correct 401 ms 764 KB Output is correct
57 Correct 1 ms 204 KB Output is correct
58 Correct 180 ms 6872 KB Output is correct
59 Correct 196 ms 6980 KB Output is correct
60 Correct 1930 ms 63776 KB Output is correct
61 Correct 190 ms 7068 KB Output is correct
62 Correct 190 ms 7044 KB Output is correct
63 Correct 229 ms 7044 KB Output is correct
64 Correct 184 ms 6940 KB Output is correct
65 Correct 176 ms 6980 KB Output is correct
66 Correct 168 ms 6932 KB Output is correct
67 Correct 171 ms 6980 KB Output is correct
68 Correct 171 ms 6912 KB Output is correct
69 Correct 190 ms 6976 KB Output is correct
70 Correct 2064 ms 63712 KB Output is correct
71 Correct 170 ms 6276 KB Output is correct
72 Correct 1779 ms 63052 KB Output is correct
73 Correct 1754 ms 63412 KB Output is correct
74 Correct 0 ms 204 KB Output is correct
75 Correct 0 ms 296 KB Output is correct
76 Correct 1 ms 204 KB Output is correct
77 Correct 0 ms 292 KB Output is correct
78 Correct 0 ms 296 KB Output is correct
79 Correct 16 ms 1228 KB Output is correct
80 Correct 2039 ms 63172 KB Output is correct
81 Correct 1963 ms 63156 KB Output is correct
82 Correct 2111 ms 63088 KB Output is correct
83 Correct 2059 ms 63096 KB Output is correct
84 Correct 2235 ms 63040 KB Output is correct
85 Correct 2001 ms 63084 KB Output is correct
86 Correct 406 ms 460 KB Output is correct
87 Correct 0 ms 204 KB Output is correct