Submission #597129

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
597129	2022-07-15T14:29:16 Z	Valaki2	Dynamic Diameter (CEOI19_diameter)	C++14	7 / 100	203 ms	9032 KB

diameter

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

#define int long long
#define pb push_back

const int maxn = 1e5;

struct edge {
    int to, wei;
    edge() : to(0), wei(0) {}
    edge(int to_, int wei_) :
        to(to_), wei(wei_) {}
};

int n, q, w;
vector<int> wei;
multiset<int> m;

int query() {
    int res = 0;
    auto it = m.rbegin();
    res += *it;
    it++;
    if(it != m.rend()) {
        res += *it;
    }
    return res;
}

void solve() {
    cin >> n >> q >> w;
    wei.assign(n - 1, 0);
    for(int i = 0; i < n - 1; i++) {
        int a, b, c;
        cin >> a >> b >> c;
        wei[i] = c;
        m.insert(c);
    }
    int last = 0;
    while(q--) {
        int d, e;
        cin >> d >> e;
        d = (d + last) % (n - 1);
        e = (e + last) % w;
        // ----- changable -----
        m.erase(m.find(wei[d]));
        wei[d] = e;
        m.insert(wei[d]);
        int result = query();
        // ----- changable -----
        cout << result << "\n";
        last = result;
    }
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    solve();
    return 0;
}

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	0 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	9 ms	340 KB	Output is correct
5	Correct	30 ms	640 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	8 ms	340 KB	Output is correct
11	Correct	41 ms	744 KB	Output is correct
12	Correct	2 ms	596 KB	Output is correct
13	Correct	3 ms	596 KB	Output is correct
14	Correct	3 ms	596 KB	Output is correct
15	Correct	10 ms	652 KB	Output is correct
16	Correct	42 ms	1236 KB	Output is correct
17	Correct	45 ms	6968 KB	Output is correct
18	Correct	52 ms	6964 KB	Output is correct
19	Correct	51 ms	7000 KB	Output is correct
20	Correct	78 ms	7264 KB	Output is correct
21	Correct	140 ms	8608 KB	Output is correct