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Submission #157933

# Submission time Handle Problem Language Result Execution time Memory
157933 2019-10-14T02:32:27 Z PeppaPig Strange Device (APIO19_strange_device) C++14
100 / 100
 872 ms 69132 KB 
#include <bits/stdc++.h>

#define long long long
#define pii pair<long, long>
#define x first
#define y second

using namespace std;

const int N = 1e6+5;

int n;
long A, B, cyc, ans;
vector<pii> v;

int main() {
    scanf("%d %lld %lld", &n, &A, &B);

    bool valid = true;
    cyc = A / __gcd(B+1, A);
    if(1e18 / B < A) valid = false;
    else cyc *= B;

    for(int i = 1; i <= n; i++) {
        long l, r;
        scanf("%lld %lld", &l, &r);
        if(!valid) ans += r - l + 1;
        else {
            if(r - l + 1 >= cyc) v.emplace_back(0, 1), v.emplace_back(cyc, -1);
            else {
                l %= cyc, r %= cyc;
                v.emplace_back(l, 1);
                v.emplace_back(r + 1, -1); 
                if(l > r) {
                    v.emplace_back(0, 1);
                    v.emplace_back(cyc, -1);
                }
            }
        }
    }
    if(!valid) return !printf("%lld\n", ans);
    sort(v.begin(), v.end());
    for(int i = 0, cnt = 0; i < v.size(); ) {
        int j = i;
        for( ; v[i].x == v[j].x; j++) cnt += v[j].y;
        if(cnt) ans += v[j].x - v[i].x;
        i = j;
    }
    printf("%lld\n", ans);

    return 0;
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:43:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0, cnt = 0; i < v.size(); ) {
                             ~~^~~~~~~~~~
strange_device.cpp:17:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %lld %lld", &n, &A, &B);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
strange_device.cpp:26:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld %lld", &l, &r);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 8 ms 1392 KB Output is correct
3 Correct 9 ms 1396 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 252 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 8 ms 1396 KB Output is correct
17 Correct 77 ms 6932 KB Output is correct
18 Correct 2 ms 256 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 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 252 KB Output is correct
5 Correct 2 ms 256 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 2 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 503 ms 34348 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 681 ms 34692 KB Output is correct
3 Correct 703 ms 34616 KB Output is correct
4 Correct 660 ms 34668 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 681 ms 34692 KB Output is correct
3 Correct 703 ms 34616 KB Output is correct
4 Correct 660 ms 34668 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 688 ms 34812 KB Output is correct
7 Correct 676 ms 34580 KB Output is correct
8 Correct 683 ms 34724 KB Output is correct
9 Correct 774 ms 34568 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 681 ms 34692 KB Output is correct
3 Correct 703 ms 34616 KB Output is correct
4 Correct 660 ms 34668 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 67 ms 6628 KB Output is correct
7 Correct 76 ms 6500 KB Output is correct
8 Correct 64 ms 6500 KB Output is correct
9 Correct 67 ms 6468 KB Output is correct
10 Correct 63 ms 6500 KB Output is correct
11 Correct 69 ms 6500 KB Output is correct
12 Correct 64 ms 6500 KB Output is correct
13 Correct 74 ms 6500 KB Output is correct
14 Correct 65 ms 6500 KB Output is correct
15 Correct 79 ms 6740 KB Output is correct
16 Correct 76 ms 6500 KB Output is correct
17 Correct 68 ms 6628 KB Output is correct
18 Correct 713 ms 34696 KB Output is correct
19 Correct 641 ms 34648 KB Output is correct
20 Correct 766 ms 34612 KB Output is correct
21 Correct 77 ms 5732 KB Output is correct
22 Correct 58 ms 5908 KB Output is correct
23 Correct 225 ms 17780 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 72 ms 5732 KB Output is correct
3 Correct 73 ms 5732 KB Output is correct
4 Correct 841 ms 34624 KB Output is correct
5 Correct 73 ms 5816 KB Output is correct
6 Correct 73 ms 5808 KB Output is correct
7 Correct 72 ms 5768 KB Output is correct
8 Correct 77 ms 5732 KB Output is correct
9 Correct 71 ms 5832 KB Output is correct
10 Correct 75 ms 5604 KB Output is correct
11 Correct 75 ms 5732 KB Output is correct
12 Correct 65 ms 5732 KB Output is correct
13 Correct 78 ms 5732 KB Output is correct
14 Correct 770 ms 34504 KB Output is correct
15 Correct 77 ms 5092 KB Output is correct
16 Correct 644 ms 34388 KB Output is correct
17 Correct 676 ms 34496 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 8 ms 1392 KB Output is correct
3 Correct 9 ms 1396 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 252 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 8 ms 1396 KB Output is correct
17 Correct 77 ms 6932 KB Output is correct
18 Correct 2 ms 256 KB Output is correct
19 Correct 2 ms 256 KB Output is correct
20 Correct 2 ms 256 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 252 KB Output is correct
23 Correct 2 ms 256 KB Output is correct
24 Correct 2 ms 256 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 3 ms 376 KB Output is correct
27 Correct 3 ms 376 KB Output is correct
28 Correct 503 ms 34348 KB Output is correct
29 Correct 2 ms 256 KB Output is correct
30 Correct 681 ms 34692 KB Output is correct
31 Correct 703 ms 34616 KB Output is correct
32 Correct 660 ms 34668 KB Output is correct
33 Correct 2 ms 256 KB Output is correct
34 Correct 688 ms 34812 KB Output is correct
35 Correct 676 ms 34580 KB Output is correct
36 Correct 683 ms 34724 KB Output is correct
37 Correct 774 ms 34568 KB Output is correct
38 Correct 2 ms 256 KB Output is correct
39 Correct 67 ms 6628 KB Output is correct
40 Correct 76 ms 6500 KB Output is correct
41 Correct 64 ms 6500 KB Output is correct
42 Correct 67 ms 6468 KB Output is correct
43 Correct 63 ms 6500 KB Output is correct
44 Correct 69 ms 6500 KB Output is correct
45 Correct 64 ms 6500 KB Output is correct
46 Correct 74 ms 6500 KB Output is correct
47 Correct 65 ms 6500 KB Output is correct
48 Correct 79 ms 6740 KB Output is correct
49 Correct 76 ms 6500 KB Output is correct
50 Correct 68 ms 6628 KB Output is correct
51 Correct 713 ms 34696 KB Output is correct
52 Correct 641 ms 34648 KB Output is correct
53 Correct 766 ms 34612 KB Output is correct
54 Correct 77 ms 5732 KB Output is correct
55 Correct 58 ms 5908 KB Output is correct
56 Correct 225 ms 17780 KB Output is correct
57 Correct 2 ms 256 KB Output is correct
58 Correct 72 ms 5732 KB Output is correct
59 Correct 73 ms 5732 KB Output is correct
60 Correct 841 ms 34624 KB Output is correct
61 Correct 73 ms 5816 KB Output is correct
62 Correct 73 ms 5808 KB Output is correct
63 Correct 72 ms 5768 KB Output is correct
64 Correct 77 ms 5732 KB Output is correct
65 Correct 71 ms 5832 KB Output is correct
66 Correct 75 ms 5604 KB Output is correct
67 Correct 75 ms 5732 KB Output is correct
68 Correct 65 ms 5732 KB Output is correct
69 Correct 78 ms 5732 KB Output is correct
70 Correct 770 ms 34504 KB Output is correct
71 Correct 77 ms 5092 KB Output is correct
72 Correct 644 ms 34388 KB Output is correct
73 Correct 676 ms 34496 KB Output is correct
74 Correct 2 ms 376 KB Output is correct
75 Correct 2 ms 504 KB Output is correct
76 Correct 2 ms 256 KB Output is correct
77 Correct 2 ms 392 KB Output is correct
78 Correct 2 ms 376 KB Output is correct
79 Correct 8 ms 1264 KB Output is correct
80 Correct 872 ms 68980 KB Output is correct
81 Correct 854 ms 68888 KB Output is correct
82 Correct 744 ms 68892 KB Output is correct
83 Correct 780 ms 68840 KB Output is correct
84 Correct 775 ms 69132 KB Output is correct
85 Correct 801 ms 68960 KB Output is correct
86 Correct 230 ms 26672 KB Output is correct
87 Correct 2 ms 256 KB Output is correct