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Submission #335155

# Submission time Handle Problem Language Result Execution time Memory
335155 2020-12-11T09:58:21 Z nicholask Strange Device (APIO19_strange_device) C++14
100 / 100
 1574 ms 34704 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;
int gcd(int a,int b){
	while (b) b^=a^=b^=a%=b;
	return a;
}
signed main(){
	int n,a,b;
	cin>>n>>a>>b;
	a/=gcd(a,b+1);
	pair <int,int> p[n];
	for (int i=0; i<n; i++) cin>>p[i].first>>p[i].second;
	int lim=(a<=(1e18+5)/b?a*b:1e18+5);
	vector <pair <int,int> > v;
	for (int i=0; i<n; i++){
		if (p[i].second-p[i].first+1>=lim){
			cout<<lim;
			return 0;
		}
		p[i].first%=lim;
		p[i].second%=lim;
		if (p[i].first<=p[i].second) v.push_back({p[i].first,p[i].second});
		else {
			v.push_back({p[i].first,lim-1});
			v.push_back({0,p[i].second});
		}
	}
	sort(v.begin(),v.end());
	int ans=0,lb=v[0].first,rb=v[0].second;
	for (int i=1; i<v.size(); i++){
		if (v[i].first>rb){
			ans+=rb-lb+1;
			rb=v[i].second;
			lb=v[i].first;
		} else rb=max(rb,v[i].second);
	}
	cout<<ans+rb-lb+1;
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:31:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |  for (int i=1; i<v.size(); i++){
      |                ~^~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 16 ms 1260 KB Output is correct
3 Correct 16 ms 1280 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 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 364 KB Output is correct
10 Correct 1 ms 256 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 15 ms 1260 KB Output is correct
17 Correct 160 ms 6808 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 384 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 1 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 2 ms 364 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 1066 ms 32724 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 1499 ms 32748 KB Output is correct
3 Correct 1461 ms 32848 KB Output is correct
4 Correct 1468 ms 32852 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 1499 ms 32748 KB Output is correct
3 Correct 1461 ms 32848 KB Output is correct
4 Correct 1468 ms 32852 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1467 ms 32800 KB Output is correct
7 Correct 1495 ms 32848 KB Output is correct
8 Correct 1481 ms 32836 KB Output is correct
9 Correct 1529 ms 32852 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 1499 ms 32748 KB Output is correct
3 Correct 1461 ms 32848 KB Output is correct
4 Correct 1468 ms 32852 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 151 ms 5856 KB Output is correct
7 Correct 151 ms 5868 KB Output is correct
8 Correct 146 ms 5856 KB Output is correct
9 Correct 149 ms 5864 KB Output is correct
10 Correct 149 ms 5984 KB Output is correct
11 Correct 149 ms 5856 KB Output is correct
12 Correct 155 ms 5856 KB Output is correct
13 Correct 150 ms 5884 KB Output is correct
14 Correct 146 ms 5984 KB Output is correct
15 Correct 150 ms 5856 KB Output is correct
16 Correct 150 ms 5856 KB Output is correct
17 Correct 148 ms 5984 KB Output is correct
18 Correct 1475 ms 34704 KB Output is correct
19 Correct 1474 ms 32848 KB Output is correct
20 Correct 1529 ms 32808 KB Output is correct
21 Correct 152 ms 6240 KB Output is correct
22 Correct 144 ms 6112 KB Output is correct
23 Correct 498 ms 15856 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 153 ms 6112 KB Output is correct
3 Correct 156 ms 6112 KB Output is correct
4 Correct 1549 ms 32848 KB Output is correct
5 Correct 149 ms 6112 KB Output is correct
6 Correct 153 ms 6264 KB Output is correct
7 Correct 150 ms 6240 KB Output is correct
8 Correct 153 ms 6240 KB Output is correct
9 Correct 163 ms 6240 KB Output is correct
10 Correct 151 ms 6240 KB Output is correct
11 Correct 152 ms 6112 KB Output is correct
12 Correct 143 ms 6112 KB Output is correct
13 Correct 154 ms 6112 KB Output is correct
14 Correct 1520 ms 32780 KB Output is correct
15 Correct 154 ms 6240 KB Output is correct
16 Correct 1469 ms 33044 KB Output is correct
17 Correct 1468 ms 33144 KB Output is correct
18 Correct 1 ms 384 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 16 ms 1260 KB Output is correct
3 Correct 16 ms 1280 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 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 364 KB Output is correct
10 Correct 1 ms 256 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 15 ms 1260 KB Output is correct
17 Correct 160 ms 6808 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 384 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 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 2 ms 364 KB Output is correct
26 Correct 2 ms 384 KB Output is correct
27 Correct 2 ms 384 KB Output is correct
28 Correct 1066 ms 32724 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1499 ms 32748 KB Output is correct
31 Correct 1461 ms 32848 KB Output is correct
32 Correct 1468 ms 32852 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1467 ms 32800 KB Output is correct
35 Correct 1495 ms 32848 KB Output is correct
36 Correct 1481 ms 32836 KB Output is correct
37 Correct 1529 ms 32852 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 151 ms 5856 KB Output is correct
40 Correct 151 ms 5868 KB Output is correct
41 Correct 146 ms 5856 KB Output is correct
42 Correct 149 ms 5864 KB Output is correct
43 Correct 149 ms 5984 KB Output is correct
44 Correct 149 ms 5856 KB Output is correct
45 Correct 155 ms 5856 KB Output is correct
46 Correct 150 ms 5884 KB Output is correct
47 Correct 146 ms 5984 KB Output is correct
48 Correct 150 ms 5856 KB Output is correct
49 Correct 150 ms 5856 KB Output is correct
50 Correct 148 ms 5984 KB Output is correct
51 Correct 1475 ms 34704 KB Output is correct
52 Correct 1474 ms 32848 KB Output is correct
53 Correct 1529 ms 32808 KB Output is correct
54 Correct 152 ms 6240 KB Output is correct
55 Correct 144 ms 6112 KB Output is correct
56 Correct 498 ms 15856 KB Output is correct
57 Correct 1 ms 364 KB Output is correct
58 Correct 153 ms 6112 KB Output is correct
59 Correct 156 ms 6112 KB Output is correct
60 Correct 1549 ms 32848 KB Output is correct
61 Correct 149 ms 6112 KB Output is correct
62 Correct 153 ms 6264 KB Output is correct
63 Correct 150 ms 6240 KB Output is correct
64 Correct 153 ms 6240 KB Output is correct
65 Correct 163 ms 6240 KB Output is correct
66 Correct 151 ms 6240 KB Output is correct
67 Correct 152 ms 6112 KB Output is correct
68 Correct 143 ms 6112 KB Output is correct
69 Correct 154 ms 6112 KB Output is correct
70 Correct 1520 ms 32780 KB Output is correct
71 Correct 154 ms 6240 KB Output is correct
72 Correct 1469 ms 33044 KB Output is correct
73 Correct 1468 ms 33144 KB Output is correct
74 Correct 1 ms 384 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 15 ms 1260 KB Output is correct
80 Correct 1549 ms 32724 KB Output is correct
81 Correct 1574 ms 32596 KB Output is correct
82 Correct 1534 ms 32636 KB Output is correct
83 Correct 1509 ms 32764 KB Output is correct
84 Correct 1503 ms 32720 KB Output is correct
85 Correct 1526 ms 32724 KB Output is correct
86 Correct 491 ms 15576 KB Output is correct
87 Correct 1 ms 364 KB Output is correct