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Submission #348119

# Submission time Handle Problem Language Result Execution time Memory
348119 2021-01-14T09:43:31 Z arnold518 Strange Device (APIO19_strange_device) C++14
100 / 100
 867 ms 82936 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 1e6;

int N;
ll A, B, L;
pll P[MAXN+10];

map<ll, ll> M;

void addrange(ll l, ll r)
{
	M[l]++;
	M[r+1]--;
}

int main()
{
	scanf("%d%lld%lld", &N, &A, &B);
	for(int i=1; i<=N; i++) scanf("%lld%lld", &P[i].first, &P[i].second);

	L=__gcd(A, B+1);

	if(A/L>=(ll)1e18/B) L=1e18;
	else L=A/L*B;

	for(int i=1; i<=N; i++)
	{
		ll l=P[i].first, r=P[i].second;
		if(r-l+1>=L) return !printf("%lld\n", L);
		if(l%L<=r%L) addrange(l%L, r%L);
		else
		{
			addrange(l%L, L-1);
			addrange(0, r%L);
		}
	}

	M[L];
	ll t=0, ans=0;
	for(auto it=M.begin(); it!=M.end(); it++)
	{
		if(it->first==L) break;
		t+=it->second;
		if(t) ans+=next(it)->first-it->first;
	}
	printf("%lld\n", ans);
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:24:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   24 |  scanf("%d%lld%lld", &N, &A, &B);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
strange_device.cpp:25:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   25 |  for(int i=1; i<=N; i++) scanf("%lld%lld", &P[i].first, &P[i].second);
      |                          ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 7 ms 1516 KB Output is correct
3 Correct 7 ms 1516 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 640 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 7 ms 1516 KB Output is correct
17 Correct 81 ms 12108 KB Output is correct
18 Correct 1 ms 364 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 2 ms 492 KB Output is correct
5 Correct 356 ms 16364 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 787 ms 82936 KB Output is correct
3 Correct 790 ms 79544 KB Output is correct
4 Correct 851 ms 79600 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 787 ms 82936 KB Output is correct
3 Correct 790 ms 79544 KB Output is correct
4 Correct 851 ms 79600 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 784 ms 79340 KB Output is correct
7 Correct 794 ms 79440 KB Output is correct
8 Correct 821 ms 79340 KB Output is correct
9 Correct 842 ms 79340 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 787 ms 82936 KB Output is correct
3 Correct 790 ms 79544 KB Output is correct
4 Correct 851 ms 79600 KB Output is correct
5 Correct 2 ms 364 KB Output is correct
6 Correct 91 ms 12012 KB Output is correct
7 Correct 74 ms 11884 KB Output is correct
8 Correct 71 ms 11884 KB Output is correct
9 Correct 76 ms 11884 KB Output is correct
10 Correct 70 ms 11948 KB Output is correct
11 Correct 69 ms 11884 KB Output is correct
12 Correct 76 ms 11884 KB Output is correct
13 Correct 77 ms 11884 KB Output is correct
14 Correct 71 ms 11884 KB Output is correct
15 Correct 85 ms 11884 KB Output is correct
16 Correct 81 ms 11884 KB Output is correct
17 Correct 79 ms 11892 KB Output is correct
18 Correct 776 ms 79632 KB Output is correct
19 Correct 807 ms 79604 KB Output is correct
20 Correct 841 ms 79596 KB Output is correct
21 Correct 72 ms 12012 KB Output is correct
22 Correct 75 ms 11884 KB Output is correct
23 Correct 143 ms 18284 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 79 ms 11884 KB Output is correct
3 Correct 78 ms 11884 KB Output is correct
4 Correct 822 ms 79468 KB Output is correct
5 Correct 78 ms 11884 KB Output is correct
6 Correct 79 ms 12012 KB Output is correct
7 Correct 79 ms 12012 KB Output is correct
8 Correct 81 ms 11884 KB Output is correct
9 Correct 80 ms 11884 KB Output is correct
10 Correct 75 ms 11884 KB Output is correct
11 Correct 74 ms 11884 KB Output is correct
12 Correct 78 ms 11884 KB Output is correct
13 Correct 79 ms 11884 KB Output is correct
14 Correct 841 ms 79668 KB Output is correct
15 Correct 71 ms 11884 KB Output is correct
16 Correct 766 ms 79724 KB Output is correct
17 Correct 772 ms 79636 KB Output is correct
18 Correct 1 ms 364 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 7 ms 1516 KB Output is correct
3 Correct 7 ms 1516 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 640 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 7 ms 1516 KB Output is correct
17 Correct 81 ms 12108 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 0 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 492 KB Output is correct
26 Correct 1 ms 492 KB Output is correct
27 Correct 2 ms 492 KB Output is correct
28 Correct 356 ms 16364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 787 ms 82936 KB Output is correct
31 Correct 790 ms 79544 KB Output is correct
32 Correct 851 ms 79600 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 784 ms 79340 KB Output is correct
35 Correct 794 ms 79440 KB Output is correct
36 Correct 821 ms 79340 KB Output is correct
37 Correct 842 ms 79340 KB Output is correct
38 Correct 2 ms 364 KB Output is correct
39 Correct 91 ms 12012 KB Output is correct
40 Correct 74 ms 11884 KB Output is correct
41 Correct 71 ms 11884 KB Output is correct
42 Correct 76 ms 11884 KB Output is correct
43 Correct 70 ms 11948 KB Output is correct
44 Correct 69 ms 11884 KB Output is correct
45 Correct 76 ms 11884 KB Output is correct
46 Correct 77 ms 11884 KB Output is correct
47 Correct 71 ms 11884 KB Output is correct
48 Correct 85 ms 11884 KB Output is correct
49 Correct 81 ms 11884 KB Output is correct
50 Correct 79 ms 11892 KB Output is correct
51 Correct 776 ms 79632 KB Output is correct
52 Correct 807 ms 79604 KB Output is correct
53 Correct 841 ms 79596 KB Output is correct
54 Correct 72 ms 12012 KB Output is correct
55 Correct 75 ms 11884 KB Output is correct
56 Correct 143 ms 18284 KB Output is correct
57 Correct 0 ms 364 KB Output is correct
58 Correct 79 ms 11884 KB Output is correct
59 Correct 78 ms 11884 KB Output is correct
60 Correct 822 ms 79468 KB Output is correct
61 Correct 78 ms 11884 KB Output is correct
62 Correct 79 ms 12012 KB Output is correct
63 Correct 79 ms 12012 KB Output is correct
64 Correct 81 ms 11884 KB Output is correct
65 Correct 80 ms 11884 KB Output is correct
66 Correct 75 ms 11884 KB Output is correct
67 Correct 74 ms 11884 KB Output is correct
68 Correct 78 ms 11884 KB Output is correct
69 Correct 79 ms 11884 KB Output is correct
70 Correct 841 ms 79668 KB Output is correct
71 Correct 71 ms 11884 KB Output is correct
72 Correct 766 ms 79724 KB Output is correct
73 Correct 772 ms 79636 KB Output is correct
74 Correct 1 ms 364 KB Output is correct
75 Correct 1 ms 364 KB Output is correct
76 Correct 1 ms 364 KB Output is correct
77 Correct 1 ms 364 KB Output is correct
78 Correct 1 ms 364 KB Output is correct
79 Correct 8 ms 1536 KB Output is correct
80 Correct 827 ms 79852 KB Output is correct
81 Correct 827 ms 79576 KB Output is correct
82 Correct 832 ms 79724 KB Output is correct
83 Correct 867 ms 79596 KB Output is correct
84 Correct 853 ms 79596 KB Output is correct
85 Correct 810 ms 79724 KB Output is correct
86 Correct 143 ms 18156 KB Output is correct
87 Correct 1 ms 364 KB Output is correct