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Submission #677193

# Submission time Handle Problem Language Result Execution time Memory
677193 2023-01-02T14:24:30 Z Iliya Strange Device (APIO19_strange_device) C++17
100 / 100
 1094 ms 63256 KB 
#include<bits/stdc++.h>
#define F first
#define S second
#define pb push_back
#define Sz(x) int((x).size())
#define All(x) (x).begin(), (x).end()

using namespace std;
typedef long long ll;
typedef long double ld;

const int N = 1e5 + 10;
const ll INF = 1e18;
const int MOD = 1e9 + 7;

ll gcd(ll a, ll b) {
	return !b ? a : gcd(b, a % b);
}

map<ll, ll> PS;
ll n, l, r, A, B, G, P, pos, ans, last;

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	
	scanf("%lld%lld%lld", &n, &A, &B);
	G = gcd(A, B + 1);
	P = (INF / B < A / G ? INF : A / G * B);
	for(int i = 0; i < n; i++) {
		scanf("%lld%lld", &l, &r);
		if(r - l + 1 >= P)
			return !(printf("%lld", P));
		l %= P, r %= P;
		if(l <= r) 
			PS[l]++, PS[r + 1]--;
		else 
			PS[0]++, PS[r + 1]--, PS[l]++, PS[P]--;
	}
	for(auto x : PS) {
		if(pos) ans += x.F - last;
		pos += x.S;
		if(pos) last = x.F;
	}
	printf("%lld", ans);

	return 0;
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:27:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |  scanf("%lld%lld%lld", &n, &A, &B);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
strange_device.cpp:31:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |   scanf("%lld%lld", &l, &r);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 6 ms 852 KB Output is correct
3 Correct 6 ms 852 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 5 ms 852 KB Output is correct
17 Correct 64 ms 6532 KB Output is correct
18 Correct 0 ms 212 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 246 ms 340 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 634 ms 62960 KB Output is correct
3 Correct 646 ms 62880 KB Output is correct
4 Correct 701 ms 63224 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 634 ms 62960 KB Output is correct
3 Correct 646 ms 62880 KB Output is correct
4 Correct 701 ms 63224 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 649 ms 63224 KB Output is correct
7 Correct 712 ms 63232 KB Output is correct
8 Correct 638 ms 63136 KB Output is correct
9 Correct 733 ms 63184 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 634 ms 62960 KB Output is correct
3 Correct 646 ms 62880 KB Output is correct
4 Correct 701 ms 63224 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 58 ms 6696 KB Output is correct
7 Correct 56 ms 6688 KB Output is correct
8 Correct 62 ms 6776 KB Output is correct
9 Correct 65 ms 6732 KB Output is correct
10 Correct 71 ms 6768 KB Output is correct
11 Correct 58 ms 6728 KB Output is correct
12 Correct 59 ms 6712 KB Output is correct
13 Correct 64 ms 6760 KB Output is correct
14 Correct 57 ms 6668 KB Output is correct
15 Correct 79 ms 6720 KB Output is correct
16 Correct 69 ms 6732 KB Output is correct
17 Correct 69 ms 6776 KB Output is correct
18 Correct 631 ms 63076 KB Output is correct
19 Correct 760 ms 63136 KB Output is correct
20 Correct 743 ms 63172 KB Output is correct
21 Correct 73 ms 6760 KB Output is correct
22 Correct 63 ms 6716 KB Output is correct
23 Correct 113 ms 500 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 69 ms 6492 KB Output is correct
3 Correct 68 ms 6748 KB Output is correct
4 Correct 736 ms 63228 KB Output is correct
5 Correct 66 ms 6788 KB Output is correct
6 Correct 71 ms 6708 KB Output is correct
7 Correct 69 ms 6676 KB Output is correct
8 Correct 78 ms 6756 KB Output is correct
9 Correct 72 ms 6736 KB Output is correct
10 Correct 62 ms 6728 KB Output is correct
11 Correct 62 ms 6744 KB Output is correct
12 Correct 67 ms 6780 KB Output is correct
13 Correct 74 ms 6684 KB Output is correct
14 Correct 1094 ms 63096 KB Output is correct
15 Correct 58 ms 6784 KB Output is correct
16 Correct 702 ms 63180 KB Output is correct
17 Correct 684 ms 63124 KB Output is correct
18 Correct 1 ms 320 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 6 ms 852 KB Output is correct
3 Correct 6 ms 852 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 5 ms 852 KB Output is correct
17 Correct 64 ms 6532 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 246 ms 340 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 634 ms 62960 KB Output is correct
31 Correct 646 ms 62880 KB Output is correct
32 Correct 701 ms 63224 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 649 ms 63224 KB Output is correct
35 Correct 712 ms 63232 KB Output is correct
36 Correct 638 ms 63136 KB Output is correct
37 Correct 733 ms 63184 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 58 ms 6696 KB Output is correct
40 Correct 56 ms 6688 KB Output is correct
41 Correct 62 ms 6776 KB Output is correct
42 Correct 65 ms 6732 KB Output is correct
43 Correct 71 ms 6768 KB Output is correct
44 Correct 58 ms 6728 KB Output is correct
45 Correct 59 ms 6712 KB Output is correct
46 Correct 64 ms 6760 KB Output is correct
47 Correct 57 ms 6668 KB Output is correct
48 Correct 79 ms 6720 KB Output is correct
49 Correct 69 ms 6732 KB Output is correct
50 Correct 69 ms 6776 KB Output is correct
51 Correct 631 ms 63076 KB Output is correct
52 Correct 760 ms 63136 KB Output is correct
53 Correct 743 ms 63172 KB Output is correct
54 Correct 73 ms 6760 KB Output is correct
55 Correct 63 ms 6716 KB Output is correct
56 Correct 113 ms 500 KB Output is correct
57 Correct 0 ms 212 KB Output is correct
58 Correct 69 ms 6492 KB Output is correct
59 Correct 68 ms 6748 KB Output is correct
60 Correct 736 ms 63228 KB Output is correct
61 Correct 66 ms 6788 KB Output is correct
62 Correct 71 ms 6708 KB Output is correct
63 Correct 69 ms 6676 KB Output is correct
64 Correct 78 ms 6756 KB Output is correct
65 Correct 72 ms 6736 KB Output is correct
66 Correct 62 ms 6728 KB Output is correct
67 Correct 62 ms 6744 KB Output is correct
68 Correct 67 ms 6780 KB Output is correct
69 Correct 74 ms 6684 KB Output is correct
70 Correct 1094 ms 63096 KB Output is correct
71 Correct 58 ms 6784 KB Output is correct
72 Correct 702 ms 63180 KB Output is correct
73 Correct 684 ms 63124 KB Output is correct
74 Correct 1 ms 320 KB Output is correct
75 Correct 1 ms 212 KB Output is correct
76 Correct 1 ms 212 KB Output is correct
77 Correct 0 ms 324 KB Output is correct
78 Correct 1 ms 212 KB Output is correct
79 Correct 7 ms 1104 KB Output is correct
80 Correct 818 ms 63196 KB Output is correct
81 Correct 835 ms 63216 KB Output is correct
82 Correct 774 ms 63188 KB Output is correct
83 Correct 768 ms 63188 KB Output is correct
84 Correct 865 ms 63244 KB Output is correct
85 Correct 859 ms 63256 KB Output is correct
86 Correct 142 ms 500 KB Output is correct
87 Correct 1 ms 212 KB Output is correct