Submission #618868

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
618868	2022-08-02T08:03:15 Z	Zanite	Dynamic Diameter (CEOI19_diameter)	C++17	7 / 100	181 ms	7936 KB

diameter

#include <bits/stdc++.h>
using namespace std;

using ll	= long long;
using pll	= pair<ll, ll>;
using Edge	= pair<ll, pll>;

#define fi	first
#define se	second

const int maxN	= 1e5 + 5;

ll n, q, w;
ll id[maxN], dist[maxN];
multiset<ll> dpq;

int main() {
	scanf("%lld %lld %lld", &n, &q, &w);
	dpq.insert(0);
	for (ll a, b, c, i = 1; i < n; i++) {
		scanf("%lld %lld %lld", &a, &b, &c);
		if (b == 1) swap(a, b);

		id[i-1] = b;
		dist[b] = c;
		dpq.insert(c);
	}

	ll last = 0;
	for (ll d, e, i = 1; i <= q; i++) {
		scanf("%lld %lld", &d, &e);
		d = (d + last) % (n - 1);
		e = (e + last) % w;

		ll change = id[d];

		dpq.erase(dpq.lower_bound(dist[change]));
		dist[change] = e;
		dpq.insert(e);

		auto it = dpq.rbegin();
		last = *it;
		it++;
		last += *it;

		printf("%lld\n", last);
	}
}

Compilation message

diameter.cpp: In function 'int main()':
diameter.cpp:18:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |  scanf("%lld %lld %lld", &n, &q, &w);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
diameter.cpp:21:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |   scanf("%lld %lld %lld", &a, &b, &c);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
diameter.cpp:31:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |   scanf("%lld %lld", &d, &e);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 11.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	0 ms	212 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #2
0 / 13.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	0 ms	212 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #3
7.0 / 7.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	11 ms	340 KB	Output is correct
5	Correct	53 ms	720 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	2 ms	340 KB	Output is correct
10	Correct	12 ms	388 KB	Output is correct
11	Correct	48 ms	756 KB	Output is correct
12	Correct	4 ms	596 KB	Output is correct
13	Correct	3 ms	596 KB	Output is correct
14	Correct	4 ms	596 KB	Output is correct
15	Correct	13 ms	708 KB	Output is correct
16	Correct	55 ms	1008 KB	Output is correct
17	Correct	60 ms	6516 KB	Output is correct
18	Correct	64 ms	6488 KB	Output is correct
19	Correct	71 ms	6460 KB	Output is correct
20	Correct	79 ms	6620 KB	Output is correct
21	Correct	153 ms	7116 KB	Output is correct