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Submission #254847

# Submission time Handle Problem Language Result Execution time Memory
254847 2020-07-30T17:48:27 Z Lawliet Strange Device (APIO19_strange_device) C++17
100 / 100
 623 ms 53480 KB 
#include <bits/stdc++.h>

using namespace std;
typedef long long int lli;
typedef pair<lli,lli> pll;

lli n, A, B;

vector<pll> sweep;
vector<pll> merged;

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

	lli cycleSize = A/__gcd( A , B + 1 );
	lli periodSize = 1000000000000000000LL;

	if( cycleSize <= periodSize/B )
		periodSize = cycleSize*B;

	for(int i = 1 ; i <= n ; i++)
	{
		lli L, R;
		scanf("%lld %lld",&L,&R);

		if( R - L + 1 >= periodSize )
		{
			printf("%lld\n",periodSize);
			return 0;
		}

		L %= periodSize; R %= periodSize;

		if( L <= R ) sweep.push_back( { L , R } );
		else
		{
			sweep.push_back( { 0 , R } );
			sweep.push_back( { L , periodSize - 1 } );
		}
	}

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

	lli ans = 0;
	lli last = -1;

	for(int i = 0 ; i < (int)sweep.size() ; i++)
	{
		last = max( last , sweep[i].first - 1 );

		if( last <= sweep[i].second )
			ans += sweep[i].second - last;

		last = max( last , sweep[i].second );
	}

	printf("%lld\n",ans);
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:14:7: 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:25:8: 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 0 ms 256 KB Output is correct
2 Correct 6 ms 1152 KB Output is correct
3 Correct 10 ms 1024 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 6 ms 1024 KB Output is correct
17 Correct 59 ms 5732 KB Output is correct
18 Correct 0 ms 256 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 448 ms 41428 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 522 ms 17564 KB Output is correct
3 Correct 513 ms 17616 KB Output is correct
4 Correct 520 ms 17596 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 522 ms 17564 KB Output is correct
3 Correct 513 ms 17616 KB Output is correct
4 Correct 520 ms 17596 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 504 ms 17516 KB Output is correct
7 Correct 530 ms 17616 KB Output is correct
8 Correct 539 ms 17488 KB Output is correct
9 Correct 565 ms 17488 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 522 ms 17564 KB Output is correct
3 Correct 513 ms 17616 KB Output is correct
4 Correct 520 ms 17596 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 56 ms 4204 KB Output is correct
7 Correct 54 ms 4204 KB Output is correct
8 Correct 60 ms 4204 KB Output is correct
9 Correct 52 ms 4204 KB Output is correct
10 Correct 73 ms 4204 KB Output is correct
11 Correct 58 ms 4204 KB Output is correct
12 Correct 51 ms 4280 KB Output is correct
13 Correct 54 ms 4204 KB Output is correct
14 Correct 52 ms 4204 KB Output is correct
15 Correct 57 ms 4204 KB Output is correct
16 Correct 62 ms 5736 KB Output is correct
17 Correct 56 ms 5740 KB Output is correct
18 Correct 552 ms 53308 KB Output is correct
19 Correct 521 ms 53476 KB Output is correct
20 Correct 593 ms 53308 KB Output is correct
21 Correct 56 ms 5736 KB Output is correct
22 Correct 50 ms 5760 KB Output is correct
23 Correct 204 ms 18524 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 56 ms 4204 KB Output is correct
3 Correct 54 ms 4204 KB Output is correct
4 Correct 602 ms 17360 KB Output is correct
5 Correct 54 ms 4332 KB Output is correct
6 Correct 55 ms 4324 KB Output is correct
7 Correct 56 ms 4328 KB Output is correct
8 Correct 59 ms 4584 KB Output is correct
9 Correct 55 ms 4836 KB Output is correct
10 Correct 55 ms 4964 KB Output is correct
11 Correct 58 ms 4892 KB Output is correct
12 Correct 49 ms 5224 KB Output is correct
13 Correct 56 ms 5224 KB Output is correct
14 Correct 574 ms 17460 KB Output is correct
15 Correct 56 ms 5732 KB Output is correct
16 Correct 539 ms 53452 KB Output is correct
17 Correct 540 ms 53308 KB Output is correct
18 Correct 1 ms 256 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 6 ms 1152 KB Output is correct
3 Correct 10 ms 1024 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 6 ms 1024 KB Output is correct
17 Correct 59 ms 5732 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 0 ms 256 KB Output is correct
21 Correct 0 ms 256 KB Output is correct
22 Correct 0 ms 256 KB Output is correct
23 Correct 0 ms 256 KB Output is correct
24 Correct 0 ms 256 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 448 ms 41428 KB Output is correct
29 Correct 0 ms 256 KB Output is correct
30 Correct 522 ms 17564 KB Output is correct
31 Correct 513 ms 17616 KB Output is correct
32 Correct 520 ms 17596 KB Output is correct
33 Correct 0 ms 256 KB Output is correct
34 Correct 504 ms 17516 KB Output is correct
35 Correct 530 ms 17616 KB Output is correct
36 Correct 539 ms 17488 KB Output is correct
37 Correct 565 ms 17488 KB Output is correct
38 Correct 0 ms 256 KB Output is correct
39 Correct 56 ms 4204 KB Output is correct
40 Correct 54 ms 4204 KB Output is correct
41 Correct 60 ms 4204 KB Output is correct
42 Correct 52 ms 4204 KB Output is correct
43 Correct 73 ms 4204 KB Output is correct
44 Correct 58 ms 4204 KB Output is correct
45 Correct 51 ms 4280 KB Output is correct
46 Correct 54 ms 4204 KB Output is correct
47 Correct 52 ms 4204 KB Output is correct
48 Correct 57 ms 4204 KB Output is correct
49 Correct 62 ms 5736 KB Output is correct
50 Correct 56 ms 5740 KB Output is correct
51 Correct 552 ms 53308 KB Output is correct
52 Correct 521 ms 53476 KB Output is correct
53 Correct 593 ms 53308 KB Output is correct
54 Correct 56 ms 5736 KB Output is correct
55 Correct 50 ms 5760 KB Output is correct
56 Correct 204 ms 18524 KB Output is correct
57 Correct 1 ms 256 KB Output is correct
58 Correct 56 ms 4204 KB Output is correct
59 Correct 54 ms 4204 KB Output is correct
60 Correct 602 ms 17360 KB Output is correct
61 Correct 54 ms 4332 KB Output is correct
62 Correct 55 ms 4324 KB Output is correct
63 Correct 56 ms 4328 KB Output is correct
64 Correct 59 ms 4584 KB Output is correct
65 Correct 55 ms 4836 KB Output is correct
66 Correct 55 ms 4964 KB Output is correct
67 Correct 58 ms 4892 KB Output is correct
68 Correct 49 ms 5224 KB Output is correct
69 Correct 56 ms 5224 KB Output is correct
70 Correct 574 ms 17460 KB Output is correct
71 Correct 56 ms 5732 KB Output is correct
72 Correct 539 ms 53452 KB Output is correct
73 Correct 540 ms 53308 KB Output is correct
74 Correct 1 ms 256 KB Output is correct
75 Correct 1 ms 256 KB Output is correct
76 Correct 1 ms 256 KB Output is correct
77 Correct 0 ms 256 KB Output is correct
78 Correct 1 ms 256 KB Output is correct
79 Correct 10 ms 1152 KB Output is correct
80 Correct 623 ms 53420 KB Output is correct
81 Correct 598 ms 53292 KB Output is correct
82 Correct 558 ms 53308 KB Output is correct
83 Correct 588 ms 53480 KB Output is correct
84 Correct 576 ms 53420 KB Output is correct
85 Correct 565 ms 53236 KB Output is correct
86 Correct 206 ms 18524 KB Output is correct
87 Correct 1 ms 256 KB Output is correct