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Submission #163997

# Submission time Handle Problem Language Result Execution time Memory
163997 2019-11-16T15:50:27 Z staniewzki Strange Device (APIO19_strange_device) C++17
100 / 100
 1012 ms 69336 KB 
#include<bits/stdc++.h>
using namespace std;
 
ostream& operator<<(ostream &out, string str) {
	for(char c : str) out << c;
	return out;
}
 
template<class L, class R> ostream& operator<<(ostream &out, pair<L, R> p) {
	return out << "(" << p.first << ", " << p.second << ")";
}
 
template<class T> auto operator<<(ostream &out, T a) -> decltype(a.begin(), out) {
	out << "{";
	for(auto it = a.begin(); it != a.end(); it = next(it))
		out << (it != a.begin() ? ", " : "") << *it;
	return out << "}";
}
 
void dump() { cerr << "\n"; }
template<class T, class... Ts> void dump(T a, Ts... x) {
	cerr << a << ", ";
	dump(x...);
}
 
#ifdef DEBUG
#  define debug(...) cerr << "[" #__VA_ARGS__ "]: ", dump(__VA_ARGS__)
#else
#  define debug(...) false
#endif
 
#define REP(i, n) for(int i = 0; i < n; i++)
#define FOR(i, a, b) for(int i = a; i <= b; i++)
#define ST first
#define ND second
 
template<class T> int size(T && a) { return a.size(); }
 
using LL = long long;
using PII = pair<LL, LL>;

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);

	int n;
	LL A, B;
	cin >> n >> A >> B;
	LL d = gcd(A, B + 1);
	debug(d);
	LL q = -1;
	if(1e18 / A < B / d) q = 1e18 + 1;
	else q = A * B / d;
	debug(q);

	vector<PII> events;
	auto add_interval = [&](LL l, LL r) {
		events.emplace_back(l, +1);
		events.emplace_back(r + 1, -1);
	};

	REP(i, n) {
		LL l, r;
		cin >> l >> r;

		LL a = l / q, b = r / q;
		if(a != b) {
			if(a + 1 < b) {
				cout << q << "\n";
				return 0;
			}
			l %= q, r %= q;
			add_interval(l, q - 1);
			add_interval(0, r);
		}
		else add_interval(l % q, r % q);
	}

	LL ans = 0, last = 0, sum = 0;
	sort(events.begin(), events.end());
	for(auto &e : events) {
		if(sum) ans += (e.ST - last);
		sum += e.ND;
		last = e.ST;
	}

	cout << ans << "\n";
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:50:10: warning: statement has no effect [-Wunused-value]
  debug(d);
          ^
strange_device.cpp:54:10: warning: statement has no effect [-Wunused-value]
  debug(q);
          ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 504 KB Output is correct
2 Correct 10 ms 1416 KB Output is correct
3 Correct 10 ms 1400 KB Output is correct
4 Correct 9 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 4 ms 376 KB Output is correct
16 Correct 10 ms 1404 KB Output is correct
17 Correct 88 ms 7272 KB Output is correct
18 Correct 2 ms 376 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 380 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 3 ms 504 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 3 ms 476 KB Output is correct
5 Correct 543 ms 57140 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 910 ms 69148 KB Output is correct
3 Correct 929 ms 69092 KB Output is correct
4 Correct 773 ms 69012 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 910 ms 69148 KB Output is correct
3 Correct 929 ms 69092 KB Output is correct
4 Correct 773 ms 69012 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 793 ms 68972 KB Output is correct
7 Correct 816 ms 69160 KB Output is correct
8 Correct 770 ms 69148 KB Output is correct
9 Correct 965 ms 69040 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 910 ms 69148 KB Output is correct
3 Correct 929 ms 69092 KB Output is correct
4 Correct 773 ms 69012 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 75 ms 7272 KB Output is correct
7 Correct 80 ms 7388 KB Output is correct
8 Correct 80 ms 7476 KB Output is correct
9 Correct 78 ms 7308 KB Output is correct
10 Correct 73 ms 7272 KB Output is correct
11 Correct 79 ms 7400 KB Output is correct
12 Correct 75 ms 7272 KB Output is correct
13 Correct 86 ms 7272 KB Output is correct
14 Correct 74 ms 7360 KB Output is correct
15 Correct 87 ms 7392 KB Output is correct
16 Correct 86 ms 7432 KB Output is correct
17 Correct 78 ms 7272 KB Output is correct
18 Correct 803 ms 69276 KB Output is correct
19 Correct 775 ms 69072 KB Output is correct
20 Correct 908 ms 68944 KB Output is correct
21 Correct 89 ms 7276 KB Output is correct
22 Correct 72 ms 7272 KB Output is correct
23 Correct 224 ms 26708 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 82 ms 7272 KB Output is correct
3 Correct 85 ms 7312 KB Output is correct
4 Correct 1012 ms 68928 KB Output is correct
5 Correct 84 ms 7392 KB Output is correct
6 Correct 85 ms 7392 KB Output is correct
7 Correct 85 ms 7452 KB Output is correct
8 Correct 97 ms 7392 KB Output is correct
9 Correct 83 ms 7280 KB Output is correct
10 Correct 89 ms 7420 KB Output is correct
11 Correct 87 ms 7396 KB Output is correct
12 Correct 76 ms 7400 KB Output is correct
13 Correct 103 ms 7320 KB Output is correct
14 Correct 893 ms 68812 KB Output is correct
15 Correct 88 ms 7392 KB Output is correct
16 Correct 757 ms 68968 KB Output is correct
17 Correct 805 ms 68976 KB Output is correct
18 Correct 2 ms 376 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 504 KB Output is correct
2 Correct 10 ms 1416 KB Output is correct
3 Correct 10 ms 1400 KB Output is correct
4 Correct 9 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 4 ms 376 KB Output is correct
16 Correct 10 ms 1404 KB Output is correct
17 Correct 88 ms 7272 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 380 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 3 ms 504 KB Output is correct
26 Correct 3 ms 376 KB Output is correct
27 Correct 3 ms 476 KB Output is correct
28 Correct 543 ms 57140 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 910 ms 69148 KB Output is correct
31 Correct 929 ms 69092 KB Output is correct
32 Correct 773 ms 69012 KB Output is correct
33 Correct 2 ms 504 KB Output is correct
34 Correct 793 ms 68972 KB Output is correct
35 Correct 816 ms 69160 KB Output is correct
36 Correct 770 ms 69148 KB Output is correct
37 Correct 965 ms 69040 KB Output is correct
38 Correct 2 ms 376 KB Output is correct
39 Correct 75 ms 7272 KB Output is correct
40 Correct 80 ms 7388 KB Output is correct
41 Correct 80 ms 7476 KB Output is correct
42 Correct 78 ms 7308 KB Output is correct
43 Correct 73 ms 7272 KB Output is correct
44 Correct 79 ms 7400 KB Output is correct
45 Correct 75 ms 7272 KB Output is correct
46 Correct 86 ms 7272 KB Output is correct
47 Correct 74 ms 7360 KB Output is correct
48 Correct 87 ms 7392 KB Output is correct
49 Correct 86 ms 7432 KB Output is correct
50 Correct 78 ms 7272 KB Output is correct
51 Correct 803 ms 69276 KB Output is correct
52 Correct 775 ms 69072 KB Output is correct
53 Correct 908 ms 68944 KB Output is correct
54 Correct 89 ms 7276 KB Output is correct
55 Correct 72 ms 7272 KB Output is correct
56 Correct 224 ms 26708 KB Output is correct
57 Correct 2 ms 384 KB Output is correct
58 Correct 82 ms 7272 KB Output is correct
59 Correct 85 ms 7312 KB Output is correct
60 Correct 1012 ms 68928 KB Output is correct
61 Correct 84 ms 7392 KB Output is correct
62 Correct 85 ms 7392 KB Output is correct
63 Correct 85 ms 7452 KB Output is correct
64 Correct 97 ms 7392 KB Output is correct
65 Correct 83 ms 7280 KB Output is correct
66 Correct 89 ms 7420 KB Output is correct
67 Correct 87 ms 7396 KB Output is correct
68 Correct 76 ms 7400 KB Output is correct
69 Correct 103 ms 7320 KB Output is correct
70 Correct 893 ms 68812 KB Output is correct
71 Correct 88 ms 7392 KB Output is correct
72 Correct 757 ms 68968 KB Output is correct
73 Correct 805 ms 68976 KB Output is correct
74 Correct 2 ms 376 KB Output is correct
75 Correct 3 ms 376 KB Output is correct
76 Correct 4 ms 376 KB Output is correct
77 Correct 2 ms 380 KB Output is correct
78 Correct 2 ms 376 KB Output is correct
79 Correct 9 ms 1400 KB Output is correct
80 Correct 992 ms 68608 KB Output is correct
81 Correct 1006 ms 69060 KB Output is correct
82 Correct 918 ms 69108 KB Output is correct
83 Correct 969 ms 69220 KB Output is correct
84 Correct 902 ms 69268 KB Output is correct
85 Correct 886 ms 69336 KB Output is correct
86 Correct 223 ms 26836 KB Output is correct
87 Correct 2 ms 376 KB Output is correct