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Submission #1105485

# Submission time Handle Problem Language Result Execution time Memory
1105485 2024-10-26T13:57:55 Z borisAngelov Strange Device (APIO19_strange_device) C++17
100 / 100
 329 ms 54252 KB 
#include <bits/stdc++.h>

using namespace std;

const long long MAXMOD = 1e18 + 7;

int n;
long long a, b;

void fastIO()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
}

int main()
{
    fastIO();

    cin >> n >> a >> b;

    long long MOD = a / __gcd(a, b + 1);

    if (MOD > MAXMOD / b)
    {
        MOD = MAXMOD;
    }
    else
    {
        MOD *= b; // a * b / gcd(a, b + 1)
    }

    vector<pair<long long, long long>> intervals;
    long long ans = 0;
    bool all = false;

    for (int i = 1; i <= n; ++i)
    {
        long long l, r;
        cin >> l >> r;

        long long newL = l % MOD;
        long long newR = r % MOD;

        if (r - l + 1 >= MOD)
        {
            cout << MOD << endl;
            return 0;
        }

        if (newL <= newR)
        {
            intervals.push_back({newL, newR});
        }
        else
        {
            intervals.push_back({newL, MOD - 1});
            intervals.push_back({0, newR});
        }
    }

    sort(intervals.begin(), intervals.end());

    long long from = intervals[0].first, to = intervals[0].second;

    for (int i = 1; i < intervals.size(); ++i)
    {
        if (intervals[i].first <= to)
        {
            to = max(to, intervals[i].second);
        }
        else
        {
            ans += (to - from + 1);
            from = intervals[i].first;
            to = intervals[i].second;
        }
    }

    ans += (to - from + 1);
    cout << ans << endl;

    return 0;
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:67:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |     for (int i = 1; i < intervals.size(); ++i)
      |                     ~~^~~~~~~~~~~~~~~~~~
strange_device.cpp:36:10: warning: unused variable 'all' [-Wunused-variable]
   36 |     bool all = false;
      |          ^~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 4 ms 724 KB Output is correct
3 Correct 4 ms 1104 KB Output is correct
4 Correct 1 ms 504 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 5 ms 1104 KB Output is correct
17 Correct 35 ms 6196 KB Output is correct
18 Correct 1 ms 336 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 508 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 680 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 222 ms 42156 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 291 ms 46324 KB Output is correct
3 Correct 263 ms 20172 KB Output is correct
4 Correct 296 ms 51720 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 291 ms 46324 KB Output is correct
3 Correct 263 ms 20172 KB Output is correct
4 Correct 296 ms 51720 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 275 ms 18936 KB Output is correct
7 Correct 260 ms 35752 KB Output is correct
8 Correct 255 ms 18860 KB Output is correct
9 Correct 273 ms 18844 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 291 ms 46324 KB Output is correct
3 Correct 263 ms 20172 KB Output is correct
4 Correct 296 ms 51720 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 28 ms 4728 KB Output is correct
7 Correct 36 ms 3540 KB Output is correct
8 Correct 26 ms 3532 KB Output is correct
9 Correct 34 ms 5056 KB Output is correct
10 Correct 27 ms 6084 KB Output is correct
11 Correct 29 ms 6348 KB Output is correct
12 Correct 26 ms 3704 KB Output is correct
13 Correct 30 ms 6204 KB Output is correct
14 Correct 30 ms 5028 KB Output is correct
15 Correct 36 ms 4948 KB Output is correct
16 Correct 30 ms 6520 KB Output is correct
17 Correct 28 ms 6348 KB Output is correct
18 Correct 303 ms 54188 KB Output is correct
19 Correct 289 ms 54180 KB Output is correct
20 Correct 305 ms 54200 KB Output is correct
21 Correct 31 ms 6356 KB Output is correct
22 Correct 33 ms 6368 KB Output is correct
23 Correct 84 ms 20540 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 28 ms 3628 KB Output is correct
3 Correct 29 ms 3532 KB Output is correct
4 Correct 329 ms 47692 KB Output is correct
5 Correct 34 ms 5336 KB Output is correct
6 Correct 34 ms 6100 KB Output is correct
7 Correct 29 ms 3532 KB Output is correct
8 Correct 32 ms 4808 KB Output is correct
9 Correct 37 ms 3632 KB Output is correct
10 Correct 31 ms 6336 KB Output is correct
11 Correct 40 ms 3524 KB Output is correct
12 Correct 28 ms 3604 KB Output is correct
13 Correct 35 ms 5836 KB Output is correct
14 Correct 303 ms 33380 KB Output is correct
15 Correct 38 ms 6348 KB Output is correct
16 Correct 292 ms 54192 KB Output is correct
17 Correct 268 ms 54140 KB Output is correct
18 Correct 1 ms 340 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 4 ms 724 KB Output is correct
3 Correct 4 ms 1104 KB Output is correct
4 Correct 1 ms 504 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 5 ms 1104 KB Output is correct
17 Correct 35 ms 6196 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 508 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 680 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 1 ms 336 KB Output is correct
28 Correct 222 ms 42156 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 291 ms 46324 KB Output is correct
31 Correct 263 ms 20172 KB Output is correct
32 Correct 296 ms 51720 KB Output is correct
33 Correct 1 ms 336 KB Output is correct
34 Correct 275 ms 18936 KB Output is correct
35 Correct 260 ms 35752 KB Output is correct
36 Correct 255 ms 18860 KB Output is correct
37 Correct 273 ms 18844 KB Output is correct
38 Correct 1 ms 336 KB Output is correct
39 Correct 28 ms 4728 KB Output is correct
40 Correct 36 ms 3540 KB Output is correct
41 Correct 26 ms 3532 KB Output is correct
42 Correct 34 ms 5056 KB Output is correct
43 Correct 27 ms 6084 KB Output is correct
44 Correct 29 ms 6348 KB Output is correct
45 Correct 26 ms 3704 KB Output is correct
46 Correct 30 ms 6204 KB Output is correct
47 Correct 30 ms 5028 KB Output is correct
48 Correct 36 ms 4948 KB Output is correct
49 Correct 30 ms 6520 KB Output is correct
50 Correct 28 ms 6348 KB Output is correct
51 Correct 303 ms 54188 KB Output is correct
52 Correct 289 ms 54180 KB Output is correct
53 Correct 305 ms 54200 KB Output is correct
54 Correct 31 ms 6356 KB Output is correct
55 Correct 33 ms 6368 KB Output is correct
56 Correct 84 ms 20540 KB Output is correct
57 Correct 1 ms 336 KB Output is correct
58 Correct 28 ms 3628 KB Output is correct
59 Correct 29 ms 3532 KB Output is correct
60 Correct 329 ms 47692 KB Output is correct
61 Correct 34 ms 5336 KB Output is correct
62 Correct 34 ms 6100 KB Output is correct
63 Correct 29 ms 3532 KB Output is correct
64 Correct 32 ms 4808 KB Output is correct
65 Correct 37 ms 3632 KB Output is correct
66 Correct 31 ms 6336 KB Output is correct
67 Correct 40 ms 3524 KB Output is correct
68 Correct 28 ms 3604 KB Output is correct
69 Correct 35 ms 5836 KB Output is correct
70 Correct 303 ms 33380 KB Output is correct
71 Correct 38 ms 6348 KB Output is correct
72 Correct 292 ms 54192 KB Output is correct
73 Correct 268 ms 54140 KB Output is correct
74 Correct 1 ms 340 KB Output is correct
75 Correct 1 ms 336 KB Output is correct
76 Correct 1 ms 336 KB Output is correct
77 Correct 1 ms 336 KB Output is correct
78 Correct 1 ms 336 KB Output is correct
79 Correct 3 ms 1116 KB Output is correct
80 Correct 310 ms 54124 KB Output is correct
81 Correct 315 ms 54124 KB Output is correct
82 Correct 293 ms 54188 KB Output is correct
83 Correct 298 ms 54252 KB Output is correct
84 Correct 291 ms 54196 KB Output is correct
85 Correct 296 ms 54188 KB Output is correct
86 Correct 82 ms 20668 KB Output is correct
87 Correct 1 ms 336 KB Output is correct