// In the name of God
// Hope is last to die
#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2")
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define pb push_back
// #define int long long
#define S second
#define F first
#define mp make_pair
#define smax(x, y) (x) = max((x), (y))
#define smin(x, y) (x) = min((x), (y))
#define all(x) (x).begin(), (x).end()
const int maxn = 1e5 + 5;
const int inf = 1e9 + 7;
struct D{
ll ans, sum, mx, mn, ul, lv;
} node[maxn * 8];
ll n, q, W, w[maxn], in[maxn], out[maxn];
vector<pll> adj[maxn];
vector<ll> vec;
void dfs(int v, int p = -1){
for(auto [u, e]: adj[v]){
if(u == p) continue;
in[e] = vec.size();
vec.pb(w[e]);
dfs(u, v);
out[e] = vec.size();
vec.pb(-w[e]);
}
}
D merge(D l, D r){
D res;
res.ans = max(l.ans, max(r.ans, max(l.ul + r.mx + l.sum, l.mx + r.lv - l.sum)));
res.sum = l.sum + r.sum;
res.mx = max(l.mx, r.mx + l.sum);
res.mn = min(l.mn, r.mn + l.sum);
res.ul = max(l.ul, max(r.ul - l.sum, l.mx - 2 * (r.mn + l.sum)));
res.lv = max(l.lv, max(r.lv - l.sum, -l.mn * 2 + r.mx + l.sum));
return res;
}
void settle(int id, ll x){
node[id].ans = abs(x);
node[id].sum = x;
node[id].mx = max(0ll, x);
node[id].mn = min(0ll, x);
node[id].ul = max(0ll, -2 * x);
node[id].lv = max(0ll, x);
}
void build(int l = 0, int r = vec.size(), int id = 1){
if(l == r - 1){
settle(id, vec[l]);
return;
}
int mid = (l + r) / 2;
build(l, mid, id * 2);
build(mid, r, id * 2 + 1);
node[id] = merge(node[id * 2], node[id * 2 + 1]);
}
void upd(int p, ll x, int l = 0, int r = vec.size(), int id = 1){
if(l == r - 1){
settle(id, x);
return;
}
int mid = (l + r) / 2;
if(p < mid) upd(p, x, l, mid, id * 2);
else upd(p, x, mid, r, id * 2 + 1);
node[id] = merge(node[id * 2], node[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 u, v; cin >> u >> v >> w[i];
adj[u].pb(mp(v, i));
adj[v].pb(mp(u, i));
}
dfs(1);
build();
ll last = 0;
while(q--){
ll d, e; cin >> d >> e;
d = (d + last) % (n - 1);
e = (e + last) % W;
upd(in[d], e);
upd(out[d], -e);
last = node[1].ans;
cout << last << '\n';
}
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
6748 KB |
Output is correct |
2 |
Correct |
2 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 |
6744 KB |
Output is correct |
6 |
Correct |
1 ms |
6744 KB |
Output is correct |
7 |
Correct |
1 ms |
6792 KB |
Output is correct |
8 |
Correct |
2 ms |
6748 KB |
Output is correct |
9 |
Correct |
1 ms |
6668 KB |
Output is correct |
10 |
Correct |
1 ms |
6748 KB |
Output is correct |
11 |
Correct |
1 ms |
6748 KB |
Output is correct |
12 |
Correct |
1 ms |
6576 KB |
Output is correct |
13 |
Correct |
1 ms |
6756 KB |
Output is correct |
14 |
Correct |
1 ms |
6748 KB |
Output is correct |
15 |
Correct |
1 ms |
6748 KB |
Output is correct |
16 |
Correct |
1 ms |
6748 KB |
Output is correct |
17 |
Correct |
2 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 |
6748 KB |
Output is correct |
2 |
Correct |
2 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 |
6744 KB |
Output is correct |
6 |
Correct |
1 ms |
6744 KB |
Output is correct |
7 |
Correct |
1 ms |
6792 KB |
Output is correct |
8 |
Correct |
2 ms |
6748 KB |
Output is correct |
9 |
Correct |
1 ms |
6668 KB |
Output is correct |
10 |
Correct |
1 ms |
6748 KB |
Output is correct |
11 |
Correct |
1 ms |
6748 KB |
Output is correct |
12 |
Correct |
1 ms |
6576 KB |
Output is correct |
13 |
Correct |
1 ms |
6756 KB |
Output is correct |
14 |
Correct |
1 ms |
6748 KB |
Output is correct |
15 |
Correct |
1 ms |
6748 KB |
Output is correct |
16 |
Correct |
1 ms |
6748 KB |
Output is correct |
17 |
Correct |
2 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 |
6900 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 |
7260 KB |
Output is correct |
24 |
Correct |
6 ms |
7260 KB |
Output is correct |
25 |
Correct |
7 ms |
7272 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 |
6748 KB |
Output is correct |
3 |
Correct |
2 ms |
6756 KB |
Output is correct |
4 |
Correct |
7 ms |
6748 KB |
Output is correct |
5 |
Correct |
30 ms |
7160 KB |
Output is correct |
6 |
Correct |
1 ms |
6748 KB |
Output is correct |
7 |
Correct |
1 ms |
6752 KB |
Output is correct |
8 |
Correct |
2 ms |
6832 KB |
Output is correct |
9 |
Correct |
2 ms |
6748 KB |
Output is correct |
10 |
Correct |
10 ms |
6760 KB |
Output is correct |
11 |
Correct |
44 ms |
7264 KB |
Output is correct |
12 |
Correct |
3 ms |
7456 KB |
Output is correct |
13 |
Correct |
2 ms |
7512 KB |
Output is correct |
14 |
Correct |
4 ms |
7260 KB |
Output is correct |
15 |
Correct |
13 ms |
7256 KB |
Output is correct |
16 |
Correct |
56 ms |
7664 KB |
Output is correct |
17 |
Correct |
29 ms |
37784 KB |
Output is correct |
18 |
Correct |
29 ms |
37640 KB |
Output is correct |
19 |
Correct |
32 ms |
37720 KB |
Output is correct |
20 |
Correct |
45 ms |
37700 KB |
Output is correct |
21 |
Correct |
164 ms |
38208 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
6744 KB |
Output is correct |
2 |
Correct |
6 ms |
6896 KB |
Output is correct |
3 |
Correct |
23 ms |
7000 KB |
Output is correct |
4 |
Correct |
43 ms |
7260 KB |
Output is correct |
5 |
Correct |
5 ms |
9688 KB |
Output is correct |
6 |
Correct |
10 ms |
9688 KB |
Output is correct |
7 |
Correct |
33 ms |
9844 KB |
Output is correct |
8 |
Correct |
57 ms |
10192 KB |
Output is correct |
9 |
Correct |
18 ms |
22736 KB |
Output is correct |
10 |
Correct |
24 ms |
22724 KB |
Output is correct |
11 |
Correct |
50 ms |
22932 KB |
Output is correct |
12 |
Correct |
82 ms |
23232 KB |
Output is correct |
13 |
Correct |
35 ms |
38508 KB |
Output is correct |
14 |
Correct |
53 ms |
38560 KB |
Output is correct |
15 |
Correct |
71 ms |
38848 KB |
Output is correct |
16 |
Correct |
116 ms |
38940 KB |
Output is correct |
17 |
Correct |
115 ms |
39104 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
156 ms |
39952 KB |
Output is correct |
2 |
Correct |
148 ms |
39856 KB |
Output is correct |
3 |
Correct |
169 ms |
39868 KB |
Output is correct |
4 |
Correct |
144 ms |
39756 KB |
Output is correct |
5 |
Correct |
142 ms |
39748 KB |
Output is correct |
6 |
Correct |
125 ms |
39520 KB |
Output is correct |
7 |
Correct |
155 ms |
43968 KB |
Output is correct |
8 |
Correct |
150 ms |
43964 KB |
Output is correct |
9 |
Correct |
150 ms |
43968 KB |
Output is correct |
10 |
Correct |
155 ms |
43920 KB |
Output is correct |
11 |
Correct |
170 ms |
43772 KB |
Output is correct |
12 |
Correct |
126 ms |
42312 KB |
Output is correct |
13 |
Correct |
162 ms |
50628 KB |
Output is correct |
14 |
Correct |
171 ms |
50744 KB |
Output is correct |
15 |
Correct |
171 ms |
50652 KB |
Output is correct |
16 |
Correct |
182 ms |
50452 KB |
Output is correct |
17 |
Correct |
166 ms |
49856 KB |
Output is correct |
18 |
Correct |
134 ms |
44860 KB |
Output is correct |
19 |
Correct |
161 ms |
50628 KB |
Output is correct |
20 |
Correct |
178 ms |
50876 KB |
Output is correct |
21 |
Correct |
164 ms |
50624 KB |
Output is correct |
22 |
Correct |
161 ms |
50524 KB |
Output is correct |
23 |
Correct |
164 ms |
49852 KB |
Output is correct |
24 |
Correct |
134 ms |
44720 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
6748 KB |
Output is correct |
2 |
Correct |
2 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 |
6744 KB |
Output is correct |
6 |
Correct |
1 ms |
6744 KB |
Output is correct |
7 |
Correct |
1 ms |
6792 KB |
Output is correct |
8 |
Correct |
2 ms |
6748 KB |
Output is correct |
9 |
Correct |
1 ms |
6668 KB |
Output is correct |
10 |
Correct |
1 ms |
6748 KB |
Output is correct |
11 |
Correct |
1 ms |
6748 KB |
Output is correct |
12 |
Correct |
1 ms |
6576 KB |
Output is correct |
13 |
Correct |
1 ms |
6756 KB |
Output is correct |
14 |
Correct |
1 ms |
6748 KB |
Output is correct |
15 |
Correct |
1 ms |
6748 KB |
Output is correct |
16 |
Correct |
1 ms |
6748 KB |
Output is correct |
17 |
Correct |
2 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 |
6900 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 |
7260 KB |
Output is correct |
24 |
Correct |
6 ms |
7260 KB |
Output is correct |
25 |
Correct |
7 ms |
7272 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 |
6748 KB |
Output is correct |
29 |
Correct |
2 ms |
6756 KB |
Output is correct |
30 |
Correct |
7 ms |
6748 KB |
Output is correct |
31 |
Correct |
30 ms |
7160 KB |
Output is correct |
32 |
Correct |
1 ms |
6748 KB |
Output is correct |
33 |
Correct |
1 ms |
6752 KB |
Output is correct |
34 |
Correct |
2 ms |
6832 KB |
Output is correct |
35 |
Correct |
2 ms |
6748 KB |
Output is correct |
36 |
Correct |
10 ms |
6760 KB |
Output is correct |
37 |
Correct |
44 ms |
7264 KB |
Output is correct |
38 |
Correct |
3 ms |
7456 KB |
Output is correct |
39 |
Correct |
2 ms |
7512 KB |
Output is correct |
40 |
Correct |
4 ms |
7260 KB |
Output is correct |
41 |
Correct |
13 ms |
7256 KB |
Output is correct |
42 |
Correct |
56 ms |
7664 KB |
Output is correct |
43 |
Correct |
29 ms |
37784 KB |
Output is correct |
44 |
Correct |
29 ms |
37640 KB |
Output is correct |
45 |
Correct |
32 ms |
37720 KB |
Output is correct |
46 |
Correct |
45 ms |
37700 KB |
Output is correct |
47 |
Correct |
164 ms |
38208 KB |
Output is correct |
48 |
Correct |
2 ms |
6744 KB |
Output is correct |
49 |
Correct |
6 ms |
6896 KB |
Output is correct |
50 |
Correct |
23 ms |
7000 KB |
Output is correct |
51 |
Correct |
43 ms |
7260 KB |
Output is correct |
52 |
Correct |
5 ms |
9688 KB |
Output is correct |
53 |
Correct |
10 ms |
9688 KB |
Output is correct |
54 |
Correct |
33 ms |
9844 KB |
Output is correct |
55 |
Correct |
57 ms |
10192 KB |
Output is correct |
56 |
Correct |
18 ms |
22736 KB |
Output is correct |
57 |
Correct |
24 ms |
22724 KB |
Output is correct |
58 |
Correct |
50 ms |
22932 KB |
Output is correct |
59 |
Correct |
82 ms |
23232 KB |
Output is correct |
60 |
Correct |
35 ms |
38508 KB |
Output is correct |
61 |
Correct |
53 ms |
38560 KB |
Output is correct |
62 |
Correct |
71 ms |
38848 KB |
Output is correct |
63 |
Correct |
116 ms |
38940 KB |
Output is correct |
64 |
Correct |
115 ms |
39104 KB |
Output is correct |
65 |
Correct |
156 ms |
39952 KB |
Output is correct |
66 |
Correct |
148 ms |
39856 KB |
Output is correct |
67 |
Correct |
169 ms |
39868 KB |
Output is correct |
68 |
Correct |
144 ms |
39756 KB |
Output is correct |
69 |
Correct |
142 ms |
39748 KB |
Output is correct |
70 |
Correct |
125 ms |
39520 KB |
Output is correct |
71 |
Correct |
155 ms |
43968 KB |
Output is correct |
72 |
Correct |
150 ms |
43964 KB |
Output is correct |
73 |
Correct |
150 ms |
43968 KB |
Output is correct |
74 |
Correct |
155 ms |
43920 KB |
Output is correct |
75 |
Correct |
170 ms |
43772 KB |
Output is correct |
76 |
Correct |
126 ms |
42312 KB |
Output is correct |
77 |
Correct |
162 ms |
50628 KB |
Output is correct |
78 |
Correct |
171 ms |
50744 KB |
Output is correct |
79 |
Correct |
171 ms |
50652 KB |
Output is correct |
80 |
Correct |
182 ms |
50452 KB |
Output is correct |
81 |
Correct |
166 ms |
49856 KB |
Output is correct |
82 |
Correct |
134 ms |
44860 KB |
Output is correct |
83 |
Correct |
161 ms |
50628 KB |
Output is correct |
84 |
Correct |
178 ms |
50876 KB |
Output is correct |
85 |
Correct |
164 ms |
50624 KB |
Output is correct |
86 |
Correct |
161 ms |
50524 KB |
Output is correct |
87 |
Correct |
164 ms |
49852 KB |
Output is correct |
88 |
Correct |
134 ms |
44720 KB |
Output is correct |
89 |
Correct |
141 ms |
39356 KB |
Output is correct |
90 |
Correct |
143 ms |
39968 KB |
Output is correct |
91 |
Correct |
151 ms |
42176 KB |
Output is correct |
92 |
Correct |
152 ms |
42176 KB |
Output is correct |
93 |
Correct |
153 ms |
46016 KB |
Output is correct |
94 |
Correct |
149 ms |
44732 KB |
Output is correct |
95 |
Correct |
158 ms |
47276 KB |
Output is correct |
96 |
Correct |
164 ms |
45760 KB |
Output is correct |
97 |
Correct |
174 ms |
47128 KB |
Output is correct |
98 |
Correct |
175 ms |
50496 KB |
Output is correct |
99 |
Correct |
168 ms |
46792 KB |
Output is correct |
100 |
Correct |
154 ms |
46736 KB |
Output is correct |