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Submission #238635

# Submission time Handle Problem Language Result Execution time Memory
238635 2020-06-12T08:33:26 Z urd05 Strange Device (APIO19_strange_device) C++14
100 / 100
 805 ms 33784 KB 
#include <bits/stdc++.h>
using namespace std;

typedef pair<long long,int> P;
vector<P> v;

__int128 gcd(__int128 a,__int128 b) {
    if (b==0) {
        return a;
    }
    return gcd(b,a%b);
}

const long long INF=2e18;
bool big=false;

int main(void) {
    int n;
    __int128 a,b;
    long long aa,bb;
    scanf("%d %lld %lld",&n,&aa,&bb);
    a=aa;
    b=bb;
    __int128 val=(a*b)/gcd(a,b+1);
    for(int i=0;i<n;i++) {
        long long l,r;
        scanf("%lld %lld",&l,&r);
        if (r-l>=val) {
            printf("%lld",(long long)val);
            return 0;
        }
        if (l/val==r/val) {
            v.push_back(P(l%val,1));
            v.push_back(P(r%val+1,-1));
        }
        else {
            v.push_back(P(0,1));
            v.push_back(P(r%val+1,-1));
            v.push_back(P(l%val,1));
            v.push_back(P(val,-1));
        }
    }
    sort(v.begin(),v.end());
    long long ret=0;
    int sum=0;
    for(int i=0;i<v.size();i++) {
        if (sum!=0) {
            ret+=v[i].first-v[i-1].first;
        }
        sum+=v[i].second;
    }
    printf("%lld",ret);
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:46:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<v.size();i++) {
                 ~^~~~~~~~~
strange_device.cpp:21:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %lld %lld",&n,&aa,&bb);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
strange_device.cpp:27:14: 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 12 ms 1276 KB Output is correct
3 Correct 12 ms 1276 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 5 ms 256 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 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 5 ms 256 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 12 ms 1276 KB Output is correct
17 Correct 84 ms 7264 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 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 256 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 5 ms 256 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 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 500 ms 33380 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 665 ms 33784 KB Output is correct
3 Correct 687 ms 33468 KB Output is correct
4 Correct 663 ms 33468 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 665 ms 33784 KB Output is correct
3 Correct 687 ms 33468 KB Output is correct
4 Correct 663 ms 33468 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 677 ms 33464 KB Output is correct
7 Correct 665 ms 33468 KB Output is correct
8 Correct 668 ms 33596 KB Output is correct
9 Correct 782 ms 33468 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 665 ms 33784 KB Output is correct
3 Correct 687 ms 33468 KB Output is correct
4 Correct 663 ms 33468 KB Output is correct
5 Correct 4 ms 256 KB Output is correct
6 Correct 71 ms 7268 KB Output is correct
7 Correct 75 ms 7268 KB Output is correct
8 Correct 67 ms 7268 KB Output is correct
9 Correct 69 ms 7276 KB Output is correct
10 Correct 70 ms 7288 KB Output is correct
11 Correct 73 ms 7272 KB Output is correct
12 Correct 66 ms 7272 KB Output is correct
13 Correct 81 ms 7268 KB Output is correct
14 Correct 69 ms 7272 KB Output is correct
15 Correct 80 ms 7276 KB Output is correct
16 Correct 79 ms 7268 KB Output is correct
17 Correct 69 ms 7272 KB Output is correct
18 Correct 697 ms 33468 KB Output is correct
19 Correct 640 ms 33572 KB Output is correct
20 Correct 797 ms 33472 KB Output is correct
21 Correct 81 ms 7272 KB Output is correct
22 Correct 63 ms 7272 KB Output is correct
23 Correct 236 ms 20432 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 78 ms 7140 KB Output is correct
3 Correct 80 ms 7084 KB Output is correct
4 Correct 805 ms 33528 KB Output is correct
5 Correct 78 ms 7272 KB Output is correct
6 Correct 76 ms 7272 KB Output is correct
7 Correct 76 ms 7284 KB Output is correct
8 Correct 82 ms 7272 KB Output is correct
9 Correct 73 ms 7192 KB Output is correct
10 Correct 77 ms 7240 KB Output is correct
11 Correct 76 ms 7280 KB Output is correct
12 Correct 75 ms 7268 KB Output is correct
13 Correct 80 ms 7272 KB Output is correct
14 Correct 755 ms 33340 KB Output is correct
15 Correct 81 ms 7268 KB Output is correct
16 Correct 655 ms 33476 KB Output is correct
17 Correct 684 ms 33468 KB Output is correct
18 Correct 5 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 12 ms 1276 KB Output is correct
3 Correct 12 ms 1276 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 5 ms 256 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 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 5 ms 256 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 12 ms 1276 KB Output is correct
17 Correct 84 ms 7264 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 4 ms 256 KB Output is correct
22 Correct 5 ms 256 KB Output is correct
23 Correct 5 ms 256 KB Output is correct
24 Correct 5 ms 384 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 500 ms 33380 KB Output is correct
29 Correct 4 ms 256 KB Output is correct
30 Correct 665 ms 33784 KB Output is correct
31 Correct 687 ms 33468 KB Output is correct
32 Correct 663 ms 33468 KB Output is correct
33 Correct 5 ms 256 KB Output is correct
34 Correct 677 ms 33464 KB Output is correct
35 Correct 665 ms 33468 KB Output is correct
36 Correct 668 ms 33596 KB Output is correct
37 Correct 782 ms 33468 KB Output is correct
38 Correct 4 ms 256 KB Output is correct
39 Correct 71 ms 7268 KB Output is correct
40 Correct 75 ms 7268 KB Output is correct
41 Correct 67 ms 7268 KB Output is correct
42 Correct 69 ms 7276 KB Output is correct
43 Correct 70 ms 7288 KB Output is correct
44 Correct 73 ms 7272 KB Output is correct
45 Correct 66 ms 7272 KB Output is correct
46 Correct 81 ms 7268 KB Output is correct
47 Correct 69 ms 7272 KB Output is correct
48 Correct 80 ms 7276 KB Output is correct
49 Correct 79 ms 7268 KB Output is correct
50 Correct 69 ms 7272 KB Output is correct
51 Correct 697 ms 33468 KB Output is correct
52 Correct 640 ms 33572 KB Output is correct
53 Correct 797 ms 33472 KB Output is correct
54 Correct 81 ms 7272 KB Output is correct
55 Correct 63 ms 7272 KB Output is correct
56 Correct 236 ms 20432 KB Output is correct
57 Correct 5 ms 256 KB Output is correct
58 Correct 78 ms 7140 KB Output is correct
59 Correct 80 ms 7084 KB Output is correct
60 Correct 805 ms 33528 KB Output is correct
61 Correct 78 ms 7272 KB Output is correct
62 Correct 76 ms 7272 KB Output is correct
63 Correct 76 ms 7284 KB Output is correct
64 Correct 82 ms 7272 KB Output is correct
65 Correct 73 ms 7192 KB Output is correct
66 Correct 77 ms 7240 KB Output is correct
67 Correct 76 ms 7280 KB Output is correct
68 Correct 75 ms 7268 KB Output is correct
69 Correct 80 ms 7272 KB Output is correct
70 Correct 755 ms 33340 KB Output is correct
71 Correct 81 ms 7268 KB Output is correct
72 Correct 655 ms 33476 KB Output is correct
73 Correct 684 ms 33468 KB Output is correct
74 Correct 5 ms 256 KB Output is correct
75 Correct 4 ms 256 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 384 KB Output is correct
79 Correct 11 ms 1404 KB Output is correct
80 Correct 785 ms 33468 KB Output is correct
81 Correct 787 ms 33468 KB Output is correct
82 Correct 747 ms 33468 KB Output is correct
83 Correct 764 ms 33468 KB Output is correct
84 Correct 767 ms 33468 KB Output is correct
85 Correct 763 ms 33468 KB Output is correct
86 Correct 232 ms 20176 KB Output is correct
87 Correct 5 ms 256 KB Output is correct