// In the name of the God
#include <bits/stdc++.h>
#define ll long long
#define int long long
#define pb push_back
#define F first
#define S second
#define mp make_pair
#define pii pair <int, int>
#define smin(x, y) (x) = min((x), (y))
#define smax(x, y) (x) = max((x), (y))
#define all(x) (x).begin(), (x).end()
using namespace std;
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2")
const int inf = 1e9+7;
const int mod = 998244353;
const int maxn = 1e5+5;
struct D {
int sum, ans, mx, mn, vl, lv;
} seg[maxn*8];
int n, q, W, w[maxn], in[maxn], out[maxn];
vector <int> vec;
vector <pii> adj[maxn];
void dfs(int v = 0, int p = 0) {
for (pii e : adj[v]) {
if (e.F != p) {
in[e.S] = vec.size(); vec.pb(w[e.S]);
dfs(e.F, v);
out[e.S] = vec.size(); vec.pb(-w[e.S]);
}
}
}
void relax(int id, int x) {
seg[id].sum = x;
seg[id].ans = abs(x);
seg[id].mx = max(0ll, x);
seg[id].mn = min(0ll, x);
seg[id].vl = max(0ll, -2*x);
seg[id].lv = max(0ll, x);
}
D merge(D l, D r) {
D res;
r.mx += l.sum, r.mn += l.sum, r.vl -= l.sum, r.lv -= l.sum;
res.sum = l.sum+r.sum;
res.ans = max(max(l.ans, r.ans), max(l.vl+r.mx, l.mx+r.lv));
res.mx = max(l.mx, r.mx);
res.mn = min(l.mn, r.mn);
res.vl = max(max(l.vl, r.vl), l.mx-r.mn*2);
res.lv = max(max(l.lv, r.lv), -l.mn*2+r.mx);
return res;
}
void build(int l = 0, int r = 2*n-2, int id = 1) {
if (l+1 == r) {
relax(id, vec[l]); return;
}
int mid = (l+r)/2;
build(l, mid, id*2), build(mid, r, id*2+1);
seg[id] = merge(seg[id*2], seg[id*2+1]);
}
void upd(int i, int x, int l = 0, int r = 2*n-2, int id = 1) {
if (l+1 == r) {
relax(id, x); return;
}
int mid = (l+r)/2;
if (i < mid) upd(i, x, l, mid, id*2);
else upd(i, x, mid, r, id*2+1);
seg[id] = merge(seg[id*2], seg[id*2+1]);
}
int32_t main() {
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> n >> q >> W;
for (int i = 0; i < n-1; i++) {
int v, u; cin >> v >> u >> w[i];
adj[--v].pb(mp(--u, i));
adj[u].pb(mp(v, i));
}
dfs(); build();
int last = 0;
while (q--) {
int d, e; cin >> d >> e;
d = (d+last)%(n-1), e = (e+last)%W;
upd(in[d], e), upd(out[d], -e);
cout << (last = seg[1].ans) << '\n';
}
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
6744 KB |
Output is correct |
2 |
Correct |
1 ms |
6748 KB |
Output is correct |
3 |
Correct |
1 ms |
6748 KB |
Output is correct |
4 |
Correct |
1 ms |
6748 KB |
Output is correct |
5 |
Correct |
1 ms |
6748 KB |
Output is correct |
6 |
Correct |
1 ms |
6748 KB |
Output is correct |
7 |
Correct |
1 ms |
6748 KB |
Output is correct |
8 |
Correct |
1 ms |
6748 KB |
Output is correct |
9 |
Correct |
1 ms |
6748 KB |
Output is correct |
10 |
Correct |
2 ms |
6748 KB |
Output is correct |
11 |
Correct |
1 ms |
6748 KB |
Output is correct |
12 |
Correct |
1 ms |
6748 KB |
Output is correct |
13 |
Correct |
1 ms |
6748 KB |
Output is correct |
14 |
Correct |
1 ms |
6748 KB |
Output is correct |
15 |
Correct |
1 ms |
6748 KB |
Output is correct |
16 |
Correct |
2 ms |
6748 KB |
Output is correct |
17 |
Correct |
1 ms |
6748 KB |
Output is correct |
18 |
Correct |
1 ms |
6748 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
6744 KB |
Output is correct |
2 |
Correct |
1 ms |
6748 KB |
Output is correct |
3 |
Correct |
1 ms |
6748 KB |
Output is correct |
4 |
Correct |
1 ms |
6748 KB |
Output is correct |
5 |
Correct |
1 ms |
6748 KB |
Output is correct |
6 |
Correct |
1 ms |
6748 KB |
Output is correct |
7 |
Correct |
1 ms |
6748 KB |
Output is correct |
8 |
Correct |
1 ms |
6748 KB |
Output is correct |
9 |
Correct |
1 ms |
6748 KB |
Output is correct |
10 |
Correct |
2 ms |
6748 KB |
Output is correct |
11 |
Correct |
1 ms |
6748 KB |
Output is correct |
12 |
Correct |
1 ms |
6748 KB |
Output is correct |
13 |
Correct |
1 ms |
6748 KB |
Output is correct |
14 |
Correct |
1 ms |
6748 KB |
Output is correct |
15 |
Correct |
1 ms |
6748 KB |
Output is correct |
16 |
Correct |
2 ms |
6748 KB |
Output is correct |
17 |
Correct |
1 ms |
6748 KB |
Output is correct |
18 |
Correct |
1 ms |
6748 KB |
Output is correct |
19 |
Correct |
4 ms |
6748 KB |
Output is correct |
20 |
Correct |
4 ms |
6748 KB |
Output is correct |
21 |
Correct |
4 ms |
6748 KB |
Output is correct |
22 |
Correct |
4 ms |
6748 KB |
Output is correct |
23 |
Correct |
6 ms |
7512 KB |
Output is correct |
24 |
Correct |
6 ms |
7260 KB |
Output is correct |
25 |
Correct |
7 ms |
7512 KB |
Output is correct |
26 |
Correct |
6 ms |
7772 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
6748 KB |
Output is correct |
2 |
Correct |
1 ms |
6764 KB |
Output is correct |
3 |
Correct |
2 ms |
6748 KB |
Output is correct |
4 |
Correct |
7 ms |
6884 KB |
Output is correct |
5 |
Correct |
30 ms |
7116 KB |
Output is correct |
6 |
Correct |
1 ms |
6748 KB |
Output is correct |
7 |
Correct |
1 ms |
6748 KB |
Output is correct |
8 |
Correct |
2 ms |
7000 KB |
Output is correct |
9 |
Correct |
2 ms |
6748 KB |
Output is correct |
10 |
Correct |
10 ms |
6744 KB |
Output is correct |
11 |
Correct |
48 ms |
7292 KB |
Output is correct |
12 |
Correct |
2 ms |
7256 KB |
Output is correct |
13 |
Correct |
3 ms |
7260 KB |
Output is correct |
14 |
Correct |
4 ms |
7260 KB |
Output is correct |
15 |
Correct |
13 ms |
7348 KB |
Output is correct |
16 |
Correct |
55 ms |
7644 KB |
Output is correct |
17 |
Correct |
29 ms |
37712 KB |
Output is correct |
18 |
Correct |
30 ms |
37792 KB |
Output is correct |
19 |
Correct |
32 ms |
37708 KB |
Output is correct |
20 |
Correct |
45 ms |
37712 KB |
Output is correct |
21 |
Correct |
130 ms |
38308 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
6748 KB |
Output is correct |
2 |
Correct |
6 ms |
6748 KB |
Output is correct |
3 |
Correct |
23 ms |
7004 KB |
Output is correct |
4 |
Correct |
44 ms |
7204 KB |
Output is correct |
5 |
Correct |
5 ms |
9688 KB |
Output is correct |
6 |
Correct |
10 ms |
9692 KB |
Output is correct |
7 |
Correct |
31 ms |
9948 KB |
Output is correct |
8 |
Correct |
59 ms |
10280 KB |
Output is correct |
9 |
Correct |
18 ms |
22736 KB |
Output is correct |
10 |
Correct |
24 ms |
22736 KB |
Output is correct |
11 |
Correct |
50 ms |
23024 KB |
Output is correct |
12 |
Correct |
89 ms |
23280 KB |
Output is correct |
13 |
Correct |
34 ms |
38340 KB |
Output is correct |
14 |
Correct |
41 ms |
38596 KB |
Output is correct |
15 |
Correct |
71 ms |
38852 KB |
Output is correct |
16 |
Correct |
113 ms |
39112 KB |
Output is correct |
17 |
Correct |
117 ms |
39184 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
153 ms |
39796 KB |
Output is correct |
2 |
Correct |
147 ms |
39868 KB |
Output is correct |
3 |
Correct |
150 ms |
39872 KB |
Output is correct |
4 |
Correct |
152 ms |
39872 KB |
Output is correct |
5 |
Correct |
143 ms |
39676 KB |
Output is correct |
6 |
Correct |
167 ms |
39512 KB |
Output is correct |
7 |
Correct |
162 ms |
43996 KB |
Output is correct |
8 |
Correct |
151 ms |
43928 KB |
Output is correct |
9 |
Correct |
152 ms |
43984 KB |
Output is correct |
10 |
Correct |
170 ms |
44080 KB |
Output is correct |
11 |
Correct |
219 ms |
43648 KB |
Output is correct |
12 |
Correct |
175 ms |
42496 KB |
Output is correct |
13 |
Correct |
249 ms |
50652 KB |
Output is correct |
14 |
Correct |
177 ms |
50892 KB |
Output is correct |
15 |
Correct |
171 ms |
50752 KB |
Output is correct |
16 |
Correct |
171 ms |
50500 KB |
Output is correct |
17 |
Correct |
169 ms |
49652 KB |
Output is correct |
18 |
Correct |
149 ms |
44880 KB |
Output is correct |
19 |
Correct |
168 ms |
50812 KB |
Output is correct |
20 |
Correct |
204 ms |
50596 KB |
Output is correct |
21 |
Correct |
216 ms |
50708 KB |
Output is correct |
22 |
Correct |
211 ms |
50456 KB |
Output is correct |
23 |
Correct |
196 ms |
49872 KB |
Output is correct |
24 |
Correct |
175 ms |
44956 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
6744 KB |
Output is correct |
2 |
Correct |
1 ms |
6748 KB |
Output is correct |
3 |
Correct |
1 ms |
6748 KB |
Output is correct |
4 |
Correct |
1 ms |
6748 KB |
Output is correct |
5 |
Correct |
1 ms |
6748 KB |
Output is correct |
6 |
Correct |
1 ms |
6748 KB |
Output is correct |
7 |
Correct |
1 ms |
6748 KB |
Output is correct |
8 |
Correct |
1 ms |
6748 KB |
Output is correct |
9 |
Correct |
1 ms |
6748 KB |
Output is correct |
10 |
Correct |
2 ms |
6748 KB |
Output is correct |
11 |
Correct |
1 ms |
6748 KB |
Output is correct |
12 |
Correct |
1 ms |
6748 KB |
Output is correct |
13 |
Correct |
1 ms |
6748 KB |
Output is correct |
14 |
Correct |
1 ms |
6748 KB |
Output is correct |
15 |
Correct |
1 ms |
6748 KB |
Output is correct |
16 |
Correct |
2 ms |
6748 KB |
Output is correct |
17 |
Correct |
1 ms |
6748 KB |
Output is correct |
18 |
Correct |
1 ms |
6748 KB |
Output is correct |
19 |
Correct |
4 ms |
6748 KB |
Output is correct |
20 |
Correct |
4 ms |
6748 KB |
Output is correct |
21 |
Correct |
4 ms |
6748 KB |
Output is correct |
22 |
Correct |
4 ms |
6748 KB |
Output is correct |
23 |
Correct |
6 ms |
7512 KB |
Output is correct |
24 |
Correct |
6 ms |
7260 KB |
Output is correct |
25 |
Correct |
7 ms |
7512 KB |
Output is correct |
26 |
Correct |
6 ms |
7772 KB |
Output is correct |
27 |
Correct |
1 ms |
6748 KB |
Output is correct |
28 |
Correct |
1 ms |
6764 KB |
Output is correct |
29 |
Correct |
2 ms |
6748 KB |
Output is correct |
30 |
Correct |
7 ms |
6884 KB |
Output is correct |
31 |
Correct |
30 ms |
7116 KB |
Output is correct |
32 |
Correct |
1 ms |
6748 KB |
Output is correct |
33 |
Correct |
1 ms |
6748 KB |
Output is correct |
34 |
Correct |
2 ms |
7000 KB |
Output is correct |
35 |
Correct |
2 ms |
6748 KB |
Output is correct |
36 |
Correct |
10 ms |
6744 KB |
Output is correct |
37 |
Correct |
48 ms |
7292 KB |
Output is correct |
38 |
Correct |
2 ms |
7256 KB |
Output is correct |
39 |
Correct |
3 ms |
7260 KB |
Output is correct |
40 |
Correct |
4 ms |
7260 KB |
Output is correct |
41 |
Correct |
13 ms |
7348 KB |
Output is correct |
42 |
Correct |
55 ms |
7644 KB |
Output is correct |
43 |
Correct |
29 ms |
37712 KB |
Output is correct |
44 |
Correct |
30 ms |
37792 KB |
Output is correct |
45 |
Correct |
32 ms |
37708 KB |
Output is correct |
46 |
Correct |
45 ms |
37712 KB |
Output is correct |
47 |
Correct |
130 ms |
38308 KB |
Output is correct |
48 |
Correct |
2 ms |
6748 KB |
Output is correct |
49 |
Correct |
6 ms |
6748 KB |
Output is correct |
50 |
Correct |
23 ms |
7004 KB |
Output is correct |
51 |
Correct |
44 ms |
7204 KB |
Output is correct |
52 |
Correct |
5 ms |
9688 KB |
Output is correct |
53 |
Correct |
10 ms |
9692 KB |
Output is correct |
54 |
Correct |
31 ms |
9948 KB |
Output is correct |
55 |
Correct |
59 ms |
10280 KB |
Output is correct |
56 |
Correct |
18 ms |
22736 KB |
Output is correct |
57 |
Correct |
24 ms |
22736 KB |
Output is correct |
58 |
Correct |
50 ms |
23024 KB |
Output is correct |
59 |
Correct |
89 ms |
23280 KB |
Output is correct |
60 |
Correct |
34 ms |
38340 KB |
Output is correct |
61 |
Correct |
41 ms |
38596 KB |
Output is correct |
62 |
Correct |
71 ms |
38852 KB |
Output is correct |
63 |
Correct |
113 ms |
39112 KB |
Output is correct |
64 |
Correct |
117 ms |
39184 KB |
Output is correct |
65 |
Correct |
153 ms |
39796 KB |
Output is correct |
66 |
Correct |
147 ms |
39868 KB |
Output is correct |
67 |
Correct |
150 ms |
39872 KB |
Output is correct |
68 |
Correct |
152 ms |
39872 KB |
Output is correct |
69 |
Correct |
143 ms |
39676 KB |
Output is correct |
70 |
Correct |
167 ms |
39512 KB |
Output is correct |
71 |
Correct |
162 ms |
43996 KB |
Output is correct |
72 |
Correct |
151 ms |
43928 KB |
Output is correct |
73 |
Correct |
152 ms |
43984 KB |
Output is correct |
74 |
Correct |
170 ms |
44080 KB |
Output is correct |
75 |
Correct |
219 ms |
43648 KB |
Output is correct |
76 |
Correct |
175 ms |
42496 KB |
Output is correct |
77 |
Correct |
249 ms |
50652 KB |
Output is correct |
78 |
Correct |
177 ms |
50892 KB |
Output is correct |
79 |
Correct |
171 ms |
50752 KB |
Output is correct |
80 |
Correct |
171 ms |
50500 KB |
Output is correct |
81 |
Correct |
169 ms |
49652 KB |
Output is correct |
82 |
Correct |
149 ms |
44880 KB |
Output is correct |
83 |
Correct |
168 ms |
50812 KB |
Output is correct |
84 |
Correct |
204 ms |
50596 KB |
Output is correct |
85 |
Correct |
216 ms |
50708 KB |
Output is correct |
86 |
Correct |
211 ms |
50456 KB |
Output is correct |
87 |
Correct |
196 ms |
49872 KB |
Output is correct |
88 |
Correct |
175 ms |
44956 KB |
Output is correct |
89 |
Correct |
173 ms |
39364 KB |
Output is correct |
90 |
Correct |
173 ms |
39892 KB |
Output is correct |
91 |
Correct |
177 ms |
42092 KB |
Output is correct |
92 |
Correct |
193 ms |
42100 KB |
Output is correct |
93 |
Correct |
192 ms |
46004 KB |
Output is correct |
94 |
Correct |
194 ms |
44744 KB |
Output is correct |
95 |
Correct |
195 ms |
47252 KB |
Output is correct |
96 |
Correct |
200 ms |
45664 KB |
Output is correct |
97 |
Correct |
203 ms |
47156 KB |
Output is correct |
98 |
Correct |
202 ms |
50368 KB |
Output is correct |
99 |
Correct |
184 ms |
46848 KB |
Output is correct |
100 |
Correct |
182 ms |
46692 KB |
Output is correct |