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Submission #252018

# Submission time Handle Problem Language Result Execution time Memory
252018 2020-07-23T17:05:45 Z yuma220284 Strange Device (APIO19_strange_device) C++14
100 / 100
 2329 ms 70364 KB 
#include "bits/stdc++.h"
using namespace std;

long long GCD(long long X, long long Y) {
	return (Y == 0 ? X : GCD(Y, X % Y));
}

int main() {
	int N;
	long long A, B;
	cin >> N >> A >> B;
	vector<pair<long long, long long> > P(N);
	for (int i = 0; i < N; i++) {
		cin >> P[i].first >> P[i].second;
	}
	long long C = A / GCD(B + 1, A);
	if (B > 2000000000000000000 / C) {
		long long ANS = 0;
		for (int i = 0; i < N; i++) {
			ANS += P[i].second - P[i].first + 1;
		}
		cout << ANS << endl;
	}
	else {
		long long D = B * C;
		for (int i = 0; i < N; i++) {
			if (P[i].first / D + 2 <= P[i].second / D) {
				cout << D << endl;
				return 0;
			}
		}
		vector<pair<long long, long long> > W;
		for (int i = 0; i < N; i++) {
			if (P[i].first / D == P[i].second / D) W.push_back({ P[i].first % D, P[i].second % D });
			else W.push_back({ P[i].first % D, D - 1 }), W.push_back({ 0, P[i].second % D });
		}
		sort(W.begin(), W.end());
		long long ANS = 0;
		pair<long long, long long> Cur = { 0, -1 };
		for (int i = 0; i < W.size(); i++) {
			if (Cur.second < W[i].first) ANS += Cur.second - Cur.first + 1, Cur = W[i];
			else Cur.second = max(Cur.second, W[i].second);
		}
		ANS += Cur.second - Cur.first + 1;
		cout << ANS << endl;
	}
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:40:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < W.size(); i++) {
                   ~~^~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 22 ms 1272 KB Output is correct
3 Correct 23 ms 1272 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 1 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 22 ms 1280 KB Output is correct
17 Correct 219 ms 7788 KB Output is correct
18 Correct 0 ms 256 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 1682 ms 58112 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 2197 ms 69916 KB Output is correct
3 Correct 2133 ms 69888 KB Output is correct
4 Correct 2143 ms 70068 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 2197 ms 69916 KB Output is correct
3 Correct 2133 ms 69888 KB Output is correct
4 Correct 2143 ms 70068 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 2172 ms 69732 KB Output is correct
7 Correct 2167 ms 70152 KB Output is correct
8 Correct 2155 ms 70364 KB Output is correct
9 Correct 2202 ms 70108 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 2197 ms 69916 KB Output is correct
3 Correct 2133 ms 69888 KB Output is correct
4 Correct 2143 ms 70068 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 218 ms 7788 KB Output is correct
7 Correct 216 ms 7788 KB Output is correct
8 Correct 211 ms 7788 KB Output is correct
9 Correct 213 ms 7788 KB Output is correct
10 Correct 212 ms 7788 KB Output is correct
11 Correct 218 ms 7788 KB Output is correct
12 Correct 226 ms 7792 KB Output is correct
13 Correct 220 ms 7788 KB Output is correct
14 Correct 226 ms 8044 KB Output is correct
15 Correct 223 ms 7932 KB Output is correct
16 Correct 220 ms 7944 KB Output is correct
17 Correct 215 ms 7832 KB Output is correct
18 Correct 2171 ms 70236 KB Output is correct
19 Correct 2132 ms 70104 KB Output is correct
20 Correct 2241 ms 69844 KB Output is correct
21 Correct 225 ms 7788 KB Output is correct
22 Correct 216 ms 7788 KB Output is correct
23 Correct 727 ms 26852 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 247 ms 8060 KB Output is correct
3 Correct 225 ms 7916 KB Output is correct
4 Correct 2265 ms 70008 KB Output is correct
5 Correct 219 ms 7788 KB Output is correct
6 Correct 217 ms 7788 KB Output is correct
7 Correct 216 ms 7788 KB Output is correct
8 Correct 226 ms 7916 KB Output is correct
9 Correct 218 ms 7788 KB Output is correct
10 Correct 224 ms 7812 KB Output is correct
11 Correct 221 ms 7788 KB Output is correct
12 Correct 211 ms 7788 KB Output is correct
13 Correct 219 ms 7916 KB Output is correct
14 Correct 2274 ms 70080 KB Output is correct
15 Correct 220 ms 7788 KB Output is correct
16 Correct 2200 ms 70212 KB Output is correct
17 Correct 2172 ms 70200 KB Output is correct
18 Correct 1 ms 256 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 22 ms 1272 KB Output is correct
3 Correct 23 ms 1272 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 1 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 22 ms 1280 KB Output is correct
17 Correct 219 ms 7788 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 1 ms 256 KB Output is correct
21 Correct 1 ms 256 KB Output is correct
22 Correct 1 ms 256 KB Output is correct
23 Correct 1 ms 256 KB Output is correct
24 Correct 1 ms 256 KB Output is correct
25 Correct 3 ms 384 KB Output is correct
26 Correct 3 ms 384 KB Output is correct
27 Correct 4 ms 384 KB Output is correct
28 Correct 1682 ms 58112 KB Output is correct
29 Correct 0 ms 256 KB Output is correct
30 Correct 2197 ms 69916 KB Output is correct
31 Correct 2133 ms 69888 KB Output is correct
32 Correct 2143 ms 70068 KB Output is correct
33 Correct 1 ms 256 KB Output is correct
34 Correct 2172 ms 69732 KB Output is correct
35 Correct 2167 ms 70152 KB Output is correct
36 Correct 2155 ms 70364 KB Output is correct
37 Correct 2202 ms 70108 KB Output is correct
38 Correct 0 ms 256 KB Output is correct
39 Correct 218 ms 7788 KB Output is correct
40 Correct 216 ms 7788 KB Output is correct
41 Correct 211 ms 7788 KB Output is correct
42 Correct 213 ms 7788 KB Output is correct
43 Correct 212 ms 7788 KB Output is correct
44 Correct 218 ms 7788 KB Output is correct
45 Correct 226 ms 7792 KB Output is correct
46 Correct 220 ms 7788 KB Output is correct
47 Correct 226 ms 8044 KB Output is correct
48 Correct 223 ms 7932 KB Output is correct
49 Correct 220 ms 7944 KB Output is correct
50 Correct 215 ms 7832 KB Output is correct
51 Correct 2171 ms 70236 KB Output is correct
52 Correct 2132 ms 70104 KB Output is correct
53 Correct 2241 ms 69844 KB Output is correct
54 Correct 225 ms 7788 KB Output is correct
55 Correct 216 ms 7788 KB Output is correct
56 Correct 727 ms 26852 KB Output is correct
57 Correct 1 ms 256 KB Output is correct
58 Correct 247 ms 8060 KB Output is correct
59 Correct 225 ms 7916 KB Output is correct
60 Correct 2265 ms 70008 KB Output is correct
61 Correct 219 ms 7788 KB Output is correct
62 Correct 217 ms 7788 KB Output is correct
63 Correct 216 ms 7788 KB Output is correct
64 Correct 226 ms 7916 KB Output is correct
65 Correct 218 ms 7788 KB Output is correct
66 Correct 224 ms 7812 KB Output is correct
67 Correct 221 ms 7788 KB Output is correct
68 Correct 211 ms 7788 KB Output is correct
69 Correct 219 ms 7916 KB Output is correct
70 Correct 2274 ms 70080 KB Output is correct
71 Correct 220 ms 7788 KB Output is correct
72 Correct 2200 ms 70212 KB Output is correct
73 Correct 2172 ms 70200 KB Output is correct
74 Correct 1 ms 256 KB Output is correct
75 Correct 0 ms 256 KB Output is correct
76 Correct 1 ms 256 KB Output is correct
77 Correct 1 ms 256 KB Output is correct
78 Correct 0 ms 256 KB Output is correct
79 Correct 23 ms 1280 KB Output is correct
80 Correct 2329 ms 69656 KB Output is correct
81 Correct 2311 ms 69816 KB Output is correct
82 Correct 2214 ms 69520 KB Output is correct
83 Correct 2208 ms 69384 KB Output is correct
84 Correct 2233 ms 69328 KB Output is correct
85 Correct 2250 ms 69604 KB Output is correct
86 Correct 725 ms 26596 KB Output is correct
87 Correct 1 ms 256 KB Output is correct