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Submission #527463

# Submission time Handle Problem Language Result Execution time Memory
527463 2022-02-17T12:58:41 Z LucaDantas Strange Device (APIO19_strange_device) C++17
100 / 100
 526 ms 23732 KB 
#include <bits/stdc++.h>
using namespace std;

constexpr long long inf = 0x3f3f3f3f3f3f3f3f;

int main() {
	long long n, A, B; scanf("%lld %lld %lld", &n, &A, &B);
	long long g = __gcd(A, B+1), sz = 0;
	if(log(A) + log(B) - log(g) > log(inf)) sz = inf;
	else sz = (A/g) * B;
	vector<pair<long long, long long>> pares;
	long long ini = 0, fim = -1, ans = 0;
	for(int i = 0; i < n; i++) {
		long long l, r; scanf("%lld %lld", &l, &r);
		if(r - l + 1 >= sz) return printf("%lld\n", sz), 0;
		l %= sz, r %= sz;
		if(r < l) fim = max(fim, r), pares.push_back({l, sz-1});
		else pares.push_back({l, r});
	}
	sort(pares.begin(), pares.end());
	for(auto p : pares) {
		if(p.first > fim) ans += fim - ini+1, ini = p.first, fim = p.second;
		else fim = max(fim, p.second);
	}
	printf("%lld\n", ans + fim - ini + 1);
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:7:26: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |  long long n, A, B; scanf("%lld %lld %lld", &n, &A, &B);
      |                     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
strange_device.cpp:14:24: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |   long long l, r; scanf("%lld %lld", &l, &r);
      |                   ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 5 ms 1000 KB Output is correct
3 Correct 5 ms 964 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 288 KB Output is correct
9 Correct 1 ms 288 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 288 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 5 ms 1036 KB Output is correct
17 Correct 50 ms 5624 KB Output is correct
18 Correct 0 ms 204 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 288 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 341 ms 17964 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 488 ms 20020 KB Output is correct
3 Correct 471 ms 19972 KB Output is correct
4 Correct 429 ms 20668 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 488 ms 20020 KB Output is correct
3 Correct 471 ms 19972 KB Output is correct
4 Correct 429 ms 20668 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 485 ms 20516 KB Output is correct
7 Correct 451 ms 20272 KB Output is correct
8 Correct 453 ms 20308 KB Output is correct
9 Correct 480 ms 19976 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 488 ms 20020 KB Output is correct
3 Correct 471 ms 19972 KB Output is correct
4 Correct 429 ms 20668 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 43 ms 5668 KB Output is correct
7 Correct 45 ms 5564 KB Output is correct
8 Correct 44 ms 5580 KB Output is correct
9 Correct 48 ms 5680 KB Output is correct
10 Correct 44 ms 5680 KB Output is correct
11 Correct 45 ms 5636 KB Output is correct
12 Correct 50 ms 5652 KB Output is correct
13 Correct 54 ms 5604 KB Output is correct
14 Correct 44 ms 5640 KB Output is correct
15 Correct 49 ms 5576 KB Output is correct
16 Correct 50 ms 5596 KB Output is correct
17 Correct 46 ms 5584 KB Output is correct
18 Correct 431 ms 22448 KB Output is correct
19 Correct 418 ms 22596 KB Output is correct
20 Correct 475 ms 22520 KB Output is correct
21 Correct 53 ms 5680 KB Output is correct
22 Correct 48 ms 5592 KB Output is correct
23 Correct 153 ms 18484 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 47 ms 5672 KB Output is correct
3 Correct 46 ms 5652 KB Output is correct
4 Correct 506 ms 19984 KB Output is correct
5 Correct 46 ms 5640 KB Output is correct
6 Correct 52 ms 5616 KB Output is correct
7 Correct 51 ms 5680 KB Output is correct
8 Correct 48 ms 5752 KB Output is correct
9 Correct 48 ms 5568 KB Output is correct
10 Correct 62 ms 5684 KB Output is correct
11 Correct 49 ms 5652 KB Output is correct
12 Correct 44 ms 5680 KB Output is correct
13 Correct 48 ms 5680 KB Output is correct
14 Correct 453 ms 20592 KB Output is correct
15 Correct 47 ms 5684 KB Output is correct
16 Correct 481 ms 21784 KB Output is correct
17 Correct 450 ms 22468 KB Output is correct
18 Correct 0 ms 204 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 5 ms 1000 KB Output is correct
3 Correct 5 ms 964 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 288 KB Output is correct
9 Correct 1 ms 288 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 288 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 5 ms 1036 KB Output is correct
17 Correct 50 ms 5624 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 288 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 0 ms 204 KB Output is correct
23 Correct 0 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 1 ms 308 KB Output is correct
28 Correct 341 ms 17964 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 488 ms 20020 KB Output is correct
31 Correct 471 ms 19972 KB Output is correct
32 Correct 429 ms 20668 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 485 ms 20516 KB Output is correct
35 Correct 451 ms 20272 KB Output is correct
36 Correct 453 ms 20308 KB Output is correct
37 Correct 480 ms 19976 KB Output is correct
38 Correct 0 ms 204 KB Output is correct
39 Correct 43 ms 5668 KB Output is correct
40 Correct 45 ms 5564 KB Output is correct
41 Correct 44 ms 5580 KB Output is correct
42 Correct 48 ms 5680 KB Output is correct
43 Correct 44 ms 5680 KB Output is correct
44 Correct 45 ms 5636 KB Output is correct
45 Correct 50 ms 5652 KB Output is correct
46 Correct 54 ms 5604 KB Output is correct
47 Correct 44 ms 5640 KB Output is correct
48 Correct 49 ms 5576 KB Output is correct
49 Correct 50 ms 5596 KB Output is correct
50 Correct 46 ms 5584 KB Output is correct
51 Correct 431 ms 22448 KB Output is correct
52 Correct 418 ms 22596 KB Output is correct
53 Correct 475 ms 22520 KB Output is correct
54 Correct 53 ms 5680 KB Output is correct
55 Correct 48 ms 5592 KB Output is correct
56 Correct 153 ms 18484 KB Output is correct
57 Correct 1 ms 204 KB Output is correct
58 Correct 47 ms 5672 KB Output is correct
59 Correct 46 ms 5652 KB Output is correct
60 Correct 506 ms 19984 KB Output is correct
61 Correct 46 ms 5640 KB Output is correct
62 Correct 52 ms 5616 KB Output is correct
63 Correct 51 ms 5680 KB Output is correct
64 Correct 48 ms 5752 KB Output is correct
65 Correct 48 ms 5568 KB Output is correct
66 Correct 62 ms 5684 KB Output is correct
67 Correct 49 ms 5652 KB Output is correct
68 Correct 44 ms 5680 KB Output is correct
69 Correct 48 ms 5680 KB Output is correct
70 Correct 453 ms 20592 KB Output is correct
71 Correct 47 ms 5684 KB Output is correct
72 Correct 481 ms 21784 KB Output is correct
73 Correct 450 ms 22468 KB Output is correct
74 Correct 0 ms 204 KB Output is correct
75 Correct 0 ms 296 KB Output is correct
76 Correct 0 ms 204 KB Output is correct
77 Correct 0 ms 204 KB Output is correct
78 Correct 0 ms 288 KB Output is correct
79 Correct 5 ms 944 KB Output is correct
80 Correct 509 ms 22304 KB Output is correct
81 Correct 501 ms 22972 KB Output is correct
82 Correct 493 ms 23044 KB Output is correct
83 Correct 475 ms 23732 KB Output is correct
84 Correct 526 ms 23072 KB Output is correct
85 Correct 502 ms 22672 KB Output is correct
86 Correct 140 ms 18348 KB Output is correct
87 Correct 1 ms 204 KB Output is correct