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Submission #121093

# Submission time Handle Problem Language Result Execution time Memory
121093 2019-06-26T05:47:12 Z tri Strange Device (APIO19_strange_device) C++14
100 / 100
 3077 ms 33468 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pi;
typedef pair<ll, ll> pl;

typedef vector<int> vi;
typedef vector<ld> vd;
typedef vector<ll> vl;

#define pb push_back
#define f first
#define s second

ll N, A, B;

int main() {
    cin >> N >> A >> B;
    ll gcd = __gcd(A, B + 1);
    ll AP = A / gcd;

    if (AP > (ll) 1e18 / B) {
        // period is so big it won't matter
        ll ans = 0;
        for (int i = 0; i < N; i++) {
            ll l, r;
            cin >> l >> r;
            ans += (r - l + 1);
        }
        cout << ans << endl;
        return 0;
    }

    ll P = AP * B;

    vector<pl> delts;

    for (int i = 0; i < N; i++) {
        ll l, r;
        cin >> l >> r;
        if (r - l + 1 >= P) {
            cout << P << endl;
            return 0;
        }

        l %= P;
        r %= P;

        if (l <= r) {
            delts.pb({l, +1});
            delts.pb({r + 1, -1});
        } else {
            delts.pb({l, +1});
            delts.pb({P, -1});
            delts.pb({0, +1});
            delts.pb({r + 1, -1});
        }
    }

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

    int cAct = 0;
    ll ans = 0;
    for (int i = 0; i < delts.size(); i++) {
        cAct += delts[i].s;
        if (i + 1 < delts.size()) {
            ll dist = delts[i + 1].f - delts[i].f;
            if (cAct > 0) {
                ans += dist;
            }
        }
    }
    cout << ans << endl;
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:67:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < delts.size(); i++) {
                     ~~^~~~~~~~~~~~~~
strange_device.cpp:69:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if (i + 1 < delts.size()) {
             ~~~~~~^~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 29 ms 1012 KB Output is correct
3 Correct 30 ms 1012 KB Output is correct
4 Correct 2 ms 128 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 252 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 29 ms 988 KB Output is correct
17 Correct 289 ms 4568 KB Output is correct
18 Correct 2 ms 380 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 3 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 292 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 4 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 1945 ms 33468 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2792 ms 33272 KB Output is correct
3 Correct 2849 ms 33296 KB Output is correct
4 Correct 2825 ms 33272 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2792 ms 33272 KB Output is correct
3 Correct 2849 ms 33296 KB Output is correct
4 Correct 2825 ms 33272 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 2832 ms 33324 KB Output is correct
7 Correct 2780 ms 33344 KB Output is correct
8 Correct 2792 ms 33252 KB Output is correct
9 Correct 2922 ms 33224 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2792 ms 33272 KB Output is correct
3 Correct 2849 ms 33296 KB Output is correct
4 Correct 2825 ms 33272 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 275 ms 4616 KB Output is correct
7 Correct 282 ms 4712 KB Output is correct
8 Correct 285 ms 4600 KB Output is correct
9 Correct 327 ms 4544 KB Output is correct
10 Correct 273 ms 4552 KB Output is correct
11 Correct 294 ms 4556 KB Output is correct
12 Correct 277 ms 4568 KB Output is correct
13 Correct 286 ms 4584 KB Output is correct
14 Correct 275 ms 4596 KB Output is correct
15 Correct 288 ms 4572 KB Output is correct
16 Correct 286 ms 4536 KB Output is correct
17 Correct 285 ms 4628 KB Output is correct
18 Correct 2869 ms 33244 KB Output is correct
19 Correct 2756 ms 33292 KB Output is correct
20 Correct 2909 ms 33416 KB Output is correct
21 Correct 290 ms 4536 KB Output is correct
22 Correct 273 ms 4572 KB Output is correct
23 Correct 905 ms 16828 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 291 ms 4592 KB Output is correct
3 Correct 285 ms 4580 KB Output is correct
4 Correct 2992 ms 33260 KB Output is correct
5 Correct 286 ms 4556 KB Output is correct
6 Correct 293 ms 4572 KB Output is correct
7 Correct 287 ms 4528 KB Output is correct
8 Correct 287 ms 4544 KB Output is correct
9 Correct 282 ms 4552 KB Output is correct
10 Correct 288 ms 4564 KB Output is correct
11 Correct 284 ms 4580 KB Output is correct
12 Correct 278 ms 4588 KB Output is correct
13 Correct 289 ms 4576 KB Output is correct
14 Correct 2906 ms 33296 KB Output is correct
15 Correct 289 ms 4548 KB Output is correct
16 Correct 2744 ms 33360 KB Output is correct
17 Correct 2799 ms 33284 KB Output is correct
18 Correct 2 ms 376 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 29 ms 1012 KB Output is correct
3 Correct 30 ms 1012 KB Output is correct
4 Correct 2 ms 128 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 252 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 29 ms 988 KB Output is correct
17 Correct 289 ms 4568 KB Output is correct
18 Correct 2 ms 380 KB Output is correct
19 Correct 2 ms 256 KB Output is correct
20 Correct 3 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 256 KB Output is correct
23 Correct 2 ms 292 KB Output is correct
24 Correct 2 ms 256 KB Output is correct
25 Correct 4 ms 376 KB Output is correct
26 Correct 5 ms 376 KB Output is correct
27 Correct 5 ms 376 KB Output is correct
28 Correct 1945 ms 33468 KB Output is correct
29 Correct 2 ms 256 KB Output is correct
30 Correct 2792 ms 33272 KB Output is correct
31 Correct 2849 ms 33296 KB Output is correct
32 Correct 2825 ms 33272 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 2832 ms 33324 KB Output is correct
35 Correct 2780 ms 33344 KB Output is correct
36 Correct 2792 ms 33252 KB Output is correct
37 Correct 2922 ms 33224 KB Output is correct
38 Correct 2 ms 376 KB Output is correct
39 Correct 275 ms 4616 KB Output is correct
40 Correct 282 ms 4712 KB Output is correct
41 Correct 285 ms 4600 KB Output is correct
42 Correct 327 ms 4544 KB Output is correct
43 Correct 273 ms 4552 KB Output is correct
44 Correct 294 ms 4556 KB Output is correct
45 Correct 277 ms 4568 KB Output is correct
46 Correct 286 ms 4584 KB Output is correct
47 Correct 275 ms 4596 KB Output is correct
48 Correct 288 ms 4572 KB Output is correct
49 Correct 286 ms 4536 KB Output is correct
50 Correct 285 ms 4628 KB Output is correct
51 Correct 2869 ms 33244 KB Output is correct
52 Correct 2756 ms 33292 KB Output is correct
53 Correct 2909 ms 33416 KB Output is correct
54 Correct 290 ms 4536 KB Output is correct
55 Correct 273 ms 4572 KB Output is correct
56 Correct 905 ms 16828 KB Output is correct
57 Correct 2 ms 376 KB Output is correct
58 Correct 291 ms 4592 KB Output is correct
59 Correct 285 ms 4580 KB Output is correct
60 Correct 2992 ms 33260 KB Output is correct
61 Correct 286 ms 4556 KB Output is correct
62 Correct 293 ms 4572 KB Output is correct
63 Correct 287 ms 4528 KB Output is correct
64 Correct 287 ms 4544 KB Output is correct
65 Correct 282 ms 4552 KB Output is correct
66 Correct 288 ms 4564 KB Output is correct
67 Correct 284 ms 4580 KB Output is correct
68 Correct 278 ms 4588 KB Output is correct
69 Correct 289 ms 4576 KB Output is correct
70 Correct 2906 ms 33296 KB Output is correct
71 Correct 289 ms 4548 KB Output is correct
72 Correct 2744 ms 33360 KB Output is correct
73 Correct 2799 ms 33284 KB Output is correct
74 Correct 2 ms 376 KB Output is correct
75 Correct 2 ms 252 KB Output is correct
76 Correct 2 ms 256 KB Output is correct
77 Correct 2 ms 256 KB Output is correct
78 Correct 2 ms 504 KB Output is correct
79 Correct 30 ms 1012 KB Output is correct
80 Correct 3077 ms 33336 KB Output is correct
81 Correct 3028 ms 33256 KB Output is correct
82 Correct 2882 ms 33308 KB Output is correct
83 Correct 2898 ms 33288 KB Output is correct
84 Correct 2904 ms 33268 KB Output is correct
85 Correct 2901 ms 33352 KB Output is correct
86 Correct 899 ms 16876 KB Output is correct
87 Correct 2 ms 256 KB Output is correct