oj.uz

Submission #255038

# Submission time Handle Problem Language Result Execution time Memory
255038 2020-07-31T05:42:57 Z ruler Strange Device (APIO19_strange_device) C++14
100 / 100
 610 ms 53568 KB 
// IOI 2021
#include <bits/stdc++.h>
using namespace std;
 
#define endl '\n'
#define ends ' '
#define die(x) return cout << x << endl, 0
#define all(v) v.begin(), v.end()
#define sz(x) (int)(x.size())
void debug_out() { cerr << endl; }
template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) { cerr << ends << H; debug_out(T...); }
#define debug(...) cerr << "{" << #__VA_ARGS__ << "}:", debug_out(__VA_ARGS__)
typedef long long ll;
typedef pair<int, int> pii;
const ll INF = 1e18;
const ll MOD = 1e9 + 7;
 
////////////////////////////////////////////////////////////////////
 
const int N = 1e5 + 5;

typedef pair<ll, ll> pll;
ll GCD(ll a, ll b) { return !b ? a : GCD(b, a % b); }

int main() {
 
	ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
	mt19937 Rnd(time(0));

	int n; cin >> n;
	ll a, b; cin >> a >> b;
	ll g = GCD(a, b + 1);
	ll k = INF;
	if (a / g <= INF / b) k = a * b / g;
	
	vector<pll> V;
	for (int i = 0; i < n; i++) {
		ll l, r; cin >> l >> r;
		if (r - l + 1 >= k) die(k);
		l %= k, r %= k;
		if (l <= r) V.push_back(make_pair(l, r));
		else V.push_back(make_pair(0, r)), V.push_back(make_pair(l, k - 1));;
	}
	sort(all(V));
	ll mx = 0, ans = 0;
	for (auto [l, r] : V) {
		mx = max(mx, l);
		if (mx <= r) ans += r - mx + 1;
		mx = max(mx, r + 1);
	}
	cout << ans << endl;

	return 0;
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:47:12: warning: decomposition declaration only available with -std=c++1z or -std=gnu++1z
  for (auto [l, r] : V) {
            ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 6 ms 1024 KB Output is correct
3 Correct 7 ms 1152 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 424 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 6 ms 1152 KB Output is correct
17 Correct 64 ms 5736 KB Output is correct
18 Correct 0 ms 384 KB Output is correct

Subtask #2
5.0 / 5.0

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

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 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 433 ms 41448 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 551 ms 26268 KB Output is correct
3 Correct 543 ms 26324 KB Output is correct
4 Correct 547 ms 26452 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 551 ms 26268 KB Output is correct
3 Correct 543 ms 26324 KB Output is correct
4 Correct 547 ms 26452 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 556 ms 26308 KB Output is correct
7 Correct 519 ms 26324 KB Output is correct
8 Correct 547 ms 26356 KB Output is correct
9 Correct 588 ms 26324 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 551 ms 26268 KB Output is correct
3 Correct 543 ms 26324 KB Output is correct
4 Correct 547 ms 26452 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 51 ms 5740 KB Output is correct
7 Correct 55 ms 5780 KB Output is correct
8 Correct 58 ms 5740 KB Output is correct
9 Correct 60 ms 5740 KB Output is correct
10 Correct 55 ms 5736 KB Output is correct
11 Correct 54 ms 5740 KB Output is correct
12 Correct 53 ms 5740 KB Output is correct
13 Correct 63 ms 5740 KB Output is correct
14 Correct 56 ms 5740 KB Output is correct
15 Correct 56 ms 5740 KB Output is correct
16 Correct 57 ms 5744 KB Output is correct
17 Correct 60 ms 5740 KB Output is correct
18 Correct 557 ms 53440 KB Output is correct
19 Correct 518 ms 53308 KB Output is correct
20 Correct 584 ms 53308 KB Output is correct
21 Correct 56 ms 5740 KB Output is correct
22 Correct 55 ms 5732 KB Output is correct
23 Correct 166 ms 18528 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 57 ms 5740 KB Output is correct
3 Correct 57 ms 5744 KB Output is correct
4 Correct 596 ms 26376 KB Output is correct
5 Correct 58 ms 5740 KB Output is correct
6 Correct 58 ms 5744 KB Output is correct
7 Correct 61 ms 5736 KB Output is correct
8 Correct 62 ms 5712 KB Output is correct
9 Correct 60 ms 5740 KB Output is correct
10 Correct 57 ms 5740 KB Output is correct
11 Correct 54 ms 5696 KB Output is correct
12 Correct 79 ms 5740 KB Output is correct
13 Correct 66 ms 5740 KB Output is correct
14 Correct 568 ms 26192 KB Output is correct
15 Correct 58 ms 5740 KB Output is correct
16 Correct 526 ms 53432 KB Output is correct
17 Correct 523 ms 53404 KB Output is correct
18 Correct 0 ms 384 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 6 ms 1024 KB Output is correct
3 Correct 7 ms 1152 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 424 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 6 ms 1152 KB Output is correct
17 Correct 64 ms 5736 KB Output is correct
18 Correct 0 ms 384 KB Output is correct
19 Correct 0 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 0 ms 384 KB Output is correct
22 Correct 0 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 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 433 ms 41448 KB Output is correct
29 Correct 0 ms 384 KB Output is correct
30 Correct 551 ms 26268 KB Output is correct
31 Correct 543 ms 26324 KB Output is correct
32 Correct 547 ms 26452 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 556 ms 26308 KB Output is correct
35 Correct 519 ms 26324 KB Output is correct
36 Correct 547 ms 26356 KB Output is correct
37 Correct 588 ms 26324 KB Output is correct
38 Correct 0 ms 384 KB Output is correct
39 Correct 51 ms 5740 KB Output is correct
40 Correct 55 ms 5780 KB Output is correct
41 Correct 58 ms 5740 KB Output is correct
42 Correct 60 ms 5740 KB Output is correct
43 Correct 55 ms 5736 KB Output is correct
44 Correct 54 ms 5740 KB Output is correct
45 Correct 53 ms 5740 KB Output is correct
46 Correct 63 ms 5740 KB Output is correct
47 Correct 56 ms 5740 KB Output is correct
48 Correct 56 ms 5740 KB Output is correct
49 Correct 57 ms 5744 KB Output is correct
50 Correct 60 ms 5740 KB Output is correct
51 Correct 557 ms 53440 KB Output is correct
52 Correct 518 ms 53308 KB Output is correct
53 Correct 584 ms 53308 KB Output is correct
54 Correct 56 ms 5740 KB Output is correct
55 Correct 55 ms 5732 KB Output is correct
56 Correct 166 ms 18528 KB Output is correct
57 Correct 1 ms 384 KB Output is correct
58 Correct 57 ms 5740 KB Output is correct
59 Correct 57 ms 5744 KB Output is correct
60 Correct 596 ms 26376 KB Output is correct
61 Correct 58 ms 5740 KB Output is correct
62 Correct 58 ms 5744 KB Output is correct
63 Correct 61 ms 5736 KB Output is correct
64 Correct 62 ms 5712 KB Output is correct
65 Correct 60 ms 5740 KB Output is correct
66 Correct 57 ms 5740 KB Output is correct
67 Correct 54 ms 5696 KB Output is correct
68 Correct 79 ms 5740 KB Output is correct
69 Correct 66 ms 5740 KB Output is correct
70 Correct 568 ms 26192 KB Output is correct
71 Correct 58 ms 5740 KB Output is correct
72 Correct 526 ms 53432 KB Output is correct
73 Correct 523 ms 53404 KB Output is correct
74 Correct 0 ms 384 KB Output is correct
75 Correct 0 ms 384 KB Output is correct
76 Correct 0 ms 384 KB Output is correct
77 Correct 0 ms 384 KB Output is correct
78 Correct 1 ms 384 KB Output is correct
79 Correct 6 ms 1152 KB Output is correct
80 Correct 610 ms 53568 KB Output is correct
81 Correct 599 ms 53308 KB Output is correct
82 Correct 545 ms 53312 KB Output is correct
83 Correct 600 ms 53284 KB Output is correct
84 Correct 575 ms 53440 KB Output is correct
85 Correct 572 ms 53312 KB Output is correct
86 Correct 166 ms 18788 KB Output is correct
87 Correct 1 ms 384 KB Output is correct