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Submission #140578

# Submission time Handle Problem Language Result Execution time Memory
140578 2019-08-03T15:25:52 Z luciocf Strange Device (APIO19_strange_device) C++14
15 / 100
 4724 ms 524292 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

ll A, B;

void solve_1(void)
{
	ll l, r;
	scanf("%lld %lld", &l, &r);

	ll x = (r-l+1)/B;
	ll g = A/__gcd(B+1, A);

	if (x >= g)
		printf("%lld\n", B*g);
	else
		printf("%lld\n", r-l+1);
}

int main(void)
{
	int n;

	scanf("%d %lld %lld", &n, &A, &B);

	if (n == 1)
	{
		solve_1();
		return 0;
	}

	set<ll> st;
	for (int i = 1; i <= n; i++)
	{
		ll l, r;
		scanf("%lld %lld", &l, &r);

		for (ll j = l; j <= r; j++)
			st.insert(j);
	}

	map<pair<ll, ll>, int> mp;

	int ans = 0;

	for (auto t: st)
	{
		ll x = (t + t/B)%A;
		ll y = t%B;

		if (!mp[{x, y}]) ans++;

		mp[{x, y}] = 1;
	}

	printf("%d\n", ans);
}

Compilation message

strange_device.cpp: In function 'void solve_1()':
strange_device.cpp:12:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld %lld", &l, &r);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~
strange_device.cpp: In function 'int main()':
strange_device.cpp:27:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %lld %lld", &n, &A, &B);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
strange_device.cpp:39:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld %lld", &l, &r);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 165 ms 21880 KB Output is correct
3 Correct 258 ms 31616 KB Output is correct
4 Correct 8 ms 1404 KB Output is correct
5 Correct 3 ms 376 KB Output is correct
6 Correct 3 ms 476 KB Output is correct
7 Correct 4 ms 760 KB Output is correct
8 Correct 4 ms 632 KB Output is correct
9 Correct 36 ms 3956 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 203 ms 21444 KB Output is correct
16 Correct 92 ms 12152 KB Output is correct
17 Correct 149 ms 15100 KB Output is correct
18 Correct 2 ms 256 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 376 KB Output is correct

Subtask #3
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 364 KB Output is correct
2 Correct 529 ms 62520 KB Output is correct
3 Correct 553 ms 61740 KB Output is correct
4 Correct 526 ms 59788 KB Output is correct
5 Runtime error 4724 ms 524292 KB Execution killed with signal 9 (could be triggered by violating memory limits)

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 1260 ms 112292 KB Output is correct
3 Runtime error 4707 ms 524292 KB Execution killed with signal 9 (could be triggered by violating memory limits)
4 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 1260 ms 112292 KB Output is correct
3 Runtime error 4707 ms 524292 KB Execution killed with signal 9 (could be triggered by violating memory limits)
4 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 1260 ms 112292 KB Output is correct
3 Runtime error 4707 ms 524292 KB Execution killed with signal 9 (could be triggered by violating memory limits)
4 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Runtime error 4724 ms 524292 KB Execution killed with signal 9 (could be triggered by violating memory limits)
3 Halted 0 ms 0 KB -

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 165 ms 21880 KB Output is correct
3 Correct 258 ms 31616 KB Output is correct
4 Correct 8 ms 1404 KB Output is correct
5 Correct 3 ms 376 KB Output is correct
6 Correct 3 ms 476 KB Output is correct
7 Correct 4 ms 760 KB Output is correct
8 Correct 4 ms 632 KB Output is correct
9 Correct 36 ms 3956 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 203 ms 21444 KB Output is correct
16 Correct 92 ms 12152 KB Output is correct
17 Correct 149 ms 15100 KB Output is correct
18 Correct 2 ms 256 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 256 KB Output is correct
21 Correct 2 ms 256 KB Output is correct
22 Correct 2 ms 256 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 364 KB Output is correct
25 Correct 529 ms 62520 KB Output is correct
26 Correct 553 ms 61740 KB Output is correct
27 Correct 526 ms 59788 KB Output is correct
28 Runtime error 4724 ms 524292 KB Execution killed with signal 9 (could be triggered by violating memory limits)