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Submission #216917

# Submission time Handle Problem Language Result Execution time Memory
216917 2020-03-28T12:20:20 Z KoalaMuch Strange Device (APIO19_strange_device) C++14
100 / 100
 595 ms 41276 KB 
#include<bits/stdc++.h>
using namespace std;
vector< pair< long long,long long > > v;
int main()
{
    long long n,a,b,s,f,ans = 0,l,r;
    scanf("%lld %lld %lld",&n,&a,&b);
    a/=__gcd(a,b+1);
    if(a>1e18/b)    a = 1e18+1;
    else            a *=b;
    for(long long i=1;i<=n;i++)
    {
        scanf("%lld %lld",&l,&r);
        if(r-l+1>=a)            v.push_back({0,a-1});
        else if((r%a)<(l%a))    v.push_back({l%a,a-1}),v.push_back({0,r%a});
        else                    v.push_back({l%a,r%a});
    }
    sort(v.begin(),v.end());
    s = v[0].first,f = v[0].second;
    for(int i=1;i<v.size();i++)
    {
        if(v[i].first>f)   ans+=f-s+1,tie(s,f) = v[i];
        else                f = max(f,v[i].second);
    }
    printf("%lld\n",ans+f-s+1);
    return 0;
}
/*
3 5 10
1 20
50 68
89 98

2 16 13
2 5
18 18

3 3 3
4 4
7 9
17 18
*/

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:20:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=1;i<v.size();i++)
                 ~^~~~~~~~~
strange_device.cpp:7:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld %lld %lld",&n,&a,&b);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
strange_device.cpp:13:14: 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 5 ms 256 KB Output is correct
2 Correct 10 ms 1024 KB Output is correct
3 Correct 10 ms 1152 KB Output is correct
4 Correct 4 ms 256 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 4 ms 256 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 256 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 4 ms 256 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 4 ms 256 KB Output is correct
15 Correct 4 ms 256 KB Output is correct
16 Correct 10 ms 1152 KB Output is correct
17 Correct 63 ms 5736 KB Output is correct
18 Correct 5 ms 384 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 4 ms 256 KB Output is correct
3 Correct 4 ms 256 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 433 ms 41276 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 550 ms 34284 KB Output is correct
3 Correct 524 ms 34256 KB Output is correct
4 Correct 529 ms 34384 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 550 ms 34284 KB Output is correct
3 Correct 524 ms 34256 KB Output is correct
4 Correct 529 ms 34384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 526 ms 34540 KB Output is correct
7 Correct 548 ms 34404 KB Output is correct
8 Correct 514 ms 34260 KB Output is correct
9 Correct 571 ms 34388 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 550 ms 34284 KB Output is correct
3 Correct 524 ms 34256 KB Output is correct
4 Correct 529 ms 34384 KB Output is correct
5 Correct 6 ms 256 KB Output is correct
6 Correct 57 ms 5732 KB Output is correct
7 Correct 70 ms 5876 KB Output is correct
8 Correct 53 ms 5740 KB Output is correct
9 Correct 57 ms 5732 KB Output is correct
10 Correct 59 ms 5736 KB Output is correct
11 Correct 64 ms 5732 KB Output is correct
12 Correct 55 ms 5732 KB Output is correct
13 Correct 60 ms 5736 KB Output is correct
14 Correct 58 ms 5736 KB Output is correct
15 Correct 61 ms 5860 KB Output is correct
16 Correct 68 ms 5736 KB Output is correct
17 Correct 57 ms 5736 KB Output is correct
18 Correct 554 ms 33788 KB Output is correct
19 Correct 525 ms 34256 KB Output is correct
20 Correct 582 ms 34552 KB Output is correct
21 Correct 64 ms 5732 KB Output is correct
22 Correct 54 ms 5732 KB Output is correct
23 Correct 205 ms 18524 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 63 ms 5708 KB Output is correct
3 Correct 61 ms 5740 KB Output is correct
4 Correct 582 ms 34256 KB Output is correct
5 Correct 58 ms 5736 KB Output is correct
6 Correct 59 ms 5736 KB Output is correct
7 Correct 60 ms 5732 KB Output is correct
8 Correct 61 ms 5732 KB Output is correct
9 Correct 57 ms 5736 KB Output is correct
10 Correct 58 ms 5736 KB Output is correct
11 Correct 61 ms 5736 KB Output is correct
12 Correct 58 ms 5736 KB Output is correct
13 Correct 61 ms 5736 KB Output is correct
14 Correct 568 ms 34256 KB Output is correct
15 Correct 69 ms 6020 KB Output is correct
16 Correct 571 ms 34256 KB Output is correct
17 Correct 541 ms 34532 KB Output is correct
18 Correct 4 ms 256 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 10 ms 1024 KB Output is correct
3 Correct 10 ms 1152 KB Output is correct
4 Correct 4 ms 256 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 4 ms 256 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 256 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 4 ms 256 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 4 ms 256 KB Output is correct
15 Correct 4 ms 256 KB Output is correct
16 Correct 10 ms 1152 KB Output is correct
17 Correct 63 ms 5736 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 4 ms 256 KB Output is correct
20 Correct 4 ms 256 KB Output is correct
21 Correct 4 ms 256 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 5 ms 384 KB Output is correct
24 Correct 4 ms 256 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 5 ms 384 KB Output is correct
27 Correct 5 ms 384 KB Output is correct
28 Correct 433 ms 41276 KB Output is correct
29 Correct 5 ms 384 KB Output is correct
30 Correct 550 ms 34284 KB Output is correct
31 Correct 524 ms 34256 KB Output is correct
32 Correct 529 ms 34384 KB Output is correct
33 Correct 5 ms 384 KB Output is correct
34 Correct 526 ms 34540 KB Output is correct
35 Correct 548 ms 34404 KB Output is correct
36 Correct 514 ms 34260 KB Output is correct
37 Correct 571 ms 34388 KB Output is correct
38 Correct 6 ms 256 KB Output is correct
39 Correct 57 ms 5732 KB Output is correct
40 Correct 70 ms 5876 KB Output is correct
41 Correct 53 ms 5740 KB Output is correct
42 Correct 57 ms 5732 KB Output is correct
43 Correct 59 ms 5736 KB Output is correct
44 Correct 64 ms 5732 KB Output is correct
45 Correct 55 ms 5732 KB Output is correct
46 Correct 60 ms 5736 KB Output is correct
47 Correct 58 ms 5736 KB Output is correct
48 Correct 61 ms 5860 KB Output is correct
49 Correct 68 ms 5736 KB Output is correct
50 Correct 57 ms 5736 KB Output is correct
51 Correct 554 ms 33788 KB Output is correct
52 Correct 525 ms 34256 KB Output is correct
53 Correct 582 ms 34552 KB Output is correct
54 Correct 64 ms 5732 KB Output is correct
55 Correct 54 ms 5732 KB Output is correct
56 Correct 205 ms 18524 KB Output is correct
57 Correct 5 ms 256 KB Output is correct
58 Correct 63 ms 5708 KB Output is correct
59 Correct 61 ms 5740 KB Output is correct
60 Correct 582 ms 34256 KB Output is correct
61 Correct 58 ms 5736 KB Output is correct
62 Correct 59 ms 5736 KB Output is correct
63 Correct 60 ms 5732 KB Output is correct
64 Correct 61 ms 5732 KB Output is correct
65 Correct 57 ms 5736 KB Output is correct
66 Correct 58 ms 5736 KB Output is correct
67 Correct 61 ms 5736 KB Output is correct
68 Correct 58 ms 5736 KB Output is correct
69 Correct 61 ms 5736 KB Output is correct
70 Correct 568 ms 34256 KB Output is correct
71 Correct 69 ms 6020 KB Output is correct
72 Correct 571 ms 34256 KB Output is correct
73 Correct 541 ms 34532 KB Output is correct
74 Correct 4 ms 256 KB Output is correct
75 Correct 4 ms 384 KB Output is correct
76 Correct 5 ms 256 KB Output is correct
77 Correct 4 ms 256 KB Output is correct
78 Correct 5 ms 256 KB Output is correct
79 Correct 10 ms 1152 KB Output is correct
80 Correct 595 ms 34384 KB Output is correct
81 Correct 589 ms 34396 KB Output is correct
82 Correct 568 ms 33980 KB Output is correct
83 Correct 555 ms 34516 KB Output is correct
84 Correct 560 ms 34264 KB Output is correct
85 Correct 561 ms 34236 KB Output is correct
86 Correct 204 ms 18524 KB Output is correct
87 Correct 5 ms 256 KB Output is correct