#include <bits/stdc++.h>
using namespace std;
#define int long long
#define ld long double
#define show(x,y) cout << y << " " << #x << endl;
#define show2(x,y,i,j) cout << y << " " << #x << " " << j << " " << #i << endl;
#define show3(x,y,i,j,p,q) cout << y << " " << #x << " " << j << " " << #i << " " << q << " " << #p << endl;
#define show4(x,y) for(auto it:y) cout << it << " "; cout << #x << endl;
typedef pair<long long,int>pii;
//typedef pair<pii,pii>pi2;
typedef array<int,6>pi2;
mt19937 rng(chrono::system_clock::now().time_since_epoch().count());
int n,q,w;
vector<pii>adj[100005];
pii edge[100005];
int in[100005];
int out[100005];
int d[100005];
int ptr=0;
vector<int>v;
void dfs(int index,int par){
in[index]=v.size();
v.push_back(index);
for(auto it:adj[index]){
if(it.first==par) continue;
d[it.first]=d[index]+it.second;
dfs(it.first,index);
v.push_back(index);
}
out[index]=v.size()-1;
}
inline pi2 combine(pi2 a, pi2 b){
pi2 temp;
temp={0,0,0,0,0};
temp[0]=max(a[0],b[0]);
temp[1]=max(a[1],b[1]);
temp[2]=max(a[2],b[2]);
temp[3]=max({a[3],b[3],a[0]+b[1]});
temp[4]=max({a[4],b[4],a[1]+b[2]});
temp[5]=max({a[5],b[5],a[3]+b[2],a[0]+b[4]});
return temp;
}
struct node{
int s,e,m;
node *l,*r;
pi2 v;
int lazyUpd;
node(int ss, int ee):s(ss),e(ee),m((s+e)>>1),lazyUpd(0){
v={0,0,0,0,0,0};
if(s!=e){
l=new node(s,m);
r=new node(m+1,e);
}
}
void self_add(int x){
v[0]+=x;
v[1]-=2*x;
v[2]+=x;
v[3]-=x;
v[4]-=x;
lazyUpd+=x;
}
void forceProp(){
if(s==e) return;
if(lazyUpd){
l->self_add(lazyUpd);
r->self_add(lazyUpd);
lazyUpd=0;
}
}
void rangeUpd(int x, int y, int c){
if(x<=s&&y>=e){
self_add(c);
return;
}
forceProp();
if(x<=m) l->rangeUpd(x,y,c);
if(y>m) r->rangeUpd(x,y,c);
v=combine(l->v,r->v);
}
pi2 query(int x, int y){
if(x<=s&&y>=e){
return v;
}
forceProp();
if(y<=m) return l->query(x,y);
if(x>m) return r->query(x,y);
return combine(l->query(x,m),r->query(m+1,y));
}
};
int cost[200005];
void solve(){
cin >> n >> q >> w;
int temp,temp2,temp3;
for(int x=0;x<n-1;x++){
cin >> temp >> temp2 >> temp3;
adj[temp].push_back({temp2,temp3});
adj[temp2].push_back({temp,temp3});
edge[x]={temp,temp2};
cost[x]=temp3;
}
dfs(1,-1);
for(int x=0;x<n-1;x++){
if(d[edge[x].first]<d[edge[x].second]) swap(edge[x].first,edge[x].second);
}
node st(0,v.size()-1);
for(int x=0;x<n-1;x++){
st.rangeUpd(in[edge[x].first],out[edge[x].first],cost[x]);
}
int last=0;
for(int x=0;x<q;x++){
cin >> temp >> temp2;
temp=(temp+last)%(n-1);
temp2=(temp2+last)%w;
int a=edge[temp].first;
int diff=temp2-cost[temp];
cost[temp]=temp2;
st.rangeUpd(in[a],out[a],diff);
last=st.v[5];
cout << last << "\n";
}
}
int32_t main(){
ios::sync_with_stdio(0);
cin.tie(0);
int t=1;
//cin >> t;
while(t--){
solve();
}
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
8028 KB |
Output is correct |
2 |
Correct |
2 ms |
8028 KB |
Output is correct |
3 |
Correct |
2 ms |
8028 KB |
Output is correct |
4 |
Correct |
2 ms |
8028 KB |
Output is correct |
5 |
Correct |
2 ms |
8028 KB |
Output is correct |
6 |
Correct |
2 ms |
8028 KB |
Output is correct |
7 |
Correct |
2 ms |
8028 KB |
Output is correct |
8 |
Correct |
2 ms |
8028 KB |
Output is correct |
9 |
Correct |
2 ms |
8024 KB |
Output is correct |
10 |
Correct |
2 ms |
8024 KB |
Output is correct |
11 |
Correct |
3 ms |
8364 KB |
Output is correct |
12 |
Correct |
3 ms |
8028 KB |
Output is correct |
13 |
Correct |
2 ms |
8028 KB |
Output is correct |
14 |
Correct |
2 ms |
8028 KB |
Output is correct |
15 |
Correct |
2 ms |
8028 KB |
Output is correct |
16 |
Correct |
2 ms |
8024 KB |
Output is correct |
17 |
Correct |
2 ms |
8028 KB |
Output is correct |
18 |
Correct |
3 ms |
8028 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
8028 KB |
Output is correct |
2 |
Correct |
2 ms |
8028 KB |
Output is correct |
3 |
Correct |
2 ms |
8028 KB |
Output is correct |
4 |
Correct |
2 ms |
8028 KB |
Output is correct |
5 |
Correct |
2 ms |
8028 KB |
Output is correct |
6 |
Correct |
2 ms |
8028 KB |
Output is correct |
7 |
Correct |
2 ms |
8028 KB |
Output is correct |
8 |
Correct |
2 ms |
8028 KB |
Output is correct |
9 |
Correct |
2 ms |
8024 KB |
Output is correct |
10 |
Correct |
2 ms |
8024 KB |
Output is correct |
11 |
Correct |
3 ms |
8364 KB |
Output is correct |
12 |
Correct |
3 ms |
8028 KB |
Output is correct |
13 |
Correct |
2 ms |
8028 KB |
Output is correct |
14 |
Correct |
2 ms |
8028 KB |
Output is correct |
15 |
Correct |
2 ms |
8028 KB |
Output is correct |
16 |
Correct |
2 ms |
8024 KB |
Output is correct |
17 |
Correct |
2 ms |
8028 KB |
Output is correct |
18 |
Correct |
3 ms |
8028 KB |
Output is correct |
19 |
Correct |
5 ms |
8540 KB |
Output is correct |
20 |
Correct |
5 ms |
8540 KB |
Output is correct |
21 |
Correct |
5 ms |
8488 KB |
Output is correct |
22 |
Correct |
6 ms |
8540 KB |
Output is correct |
23 |
Correct |
9 ms |
10756 KB |
Output is correct |
24 |
Correct |
9 ms |
10844 KB |
Output is correct |
25 |
Correct |
9 ms |
10844 KB |
Output is correct |
26 |
Correct |
10 ms |
11100 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
8028 KB |
Output is correct |
2 |
Correct |
2 ms |
8028 KB |
Output is correct |
3 |
Correct |
2 ms |
8028 KB |
Output is correct |
4 |
Correct |
7 ms |
8284 KB |
Output is correct |
5 |
Correct |
26 ms |
9044 KB |
Output is correct |
6 |
Correct |
2 ms |
8024 KB |
Output is correct |
7 |
Correct |
2 ms |
8284 KB |
Output is correct |
8 |
Correct |
2 ms |
8284 KB |
Output is correct |
9 |
Correct |
3 ms |
8284 KB |
Output is correct |
10 |
Correct |
9 ms |
8608 KB |
Output is correct |
11 |
Correct |
34 ms |
9552 KB |
Output is correct |
12 |
Correct |
5 ms |
10588 KB |
Output is correct |
13 |
Correct |
5 ms |
10696 KB |
Output is correct |
14 |
Correct |
5 ms |
10744 KB |
Output is correct |
15 |
Correct |
13 ms |
10844 KB |
Output is correct |
16 |
Correct |
46 ms |
12132 KB |
Output is correct |
17 |
Correct |
68 ms |
59460 KB |
Output is correct |
18 |
Correct |
68 ms |
59464 KB |
Output is correct |
19 |
Correct |
72 ms |
59588 KB |
Output is correct |
20 |
Correct |
85 ms |
59784 KB |
Output is correct |
21 |
Correct |
194 ms |
61060 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
8536 KB |
Output is correct |
2 |
Correct |
7 ms |
8792 KB |
Output is correct |
3 |
Correct |
28 ms |
9308 KB |
Output is correct |
4 |
Correct |
45 ms |
10020 KB |
Output is correct |
5 |
Correct |
10 ms |
13276 KB |
Output is correct |
6 |
Correct |
15 ms |
13528 KB |
Output is correct |
7 |
Correct |
41 ms |
14164 KB |
Output is correct |
8 |
Correct |
65 ms |
14848 KB |
Output is correct |
9 |
Correct |
51 ms |
34460 KB |
Output is correct |
10 |
Correct |
56 ms |
34500 KB |
Output is correct |
11 |
Correct |
85 ms |
35268 KB |
Output is correct |
12 |
Correct |
130 ms |
36076 KB |
Output is correct |
13 |
Correct |
96 ms |
60608 KB |
Output is correct |
14 |
Correct |
101 ms |
60712 KB |
Output is correct |
15 |
Correct |
156 ms |
61372 KB |
Output is correct |
16 |
Correct |
189 ms |
62396 KB |
Output is correct |
17 |
Correct |
196 ms |
62092 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
296 ms |
64448 KB |
Output is correct |
2 |
Correct |
300 ms |
64700 KB |
Output is correct |
3 |
Correct |
279 ms |
64572 KB |
Output is correct |
4 |
Correct |
293 ms |
64564 KB |
Output is correct |
5 |
Correct |
274 ms |
64440 KB |
Output is correct |
6 |
Correct |
222 ms |
64324 KB |
Output is correct |
7 |
Correct |
334 ms |
66784 KB |
Output is correct |
8 |
Correct |
316 ms |
66912 KB |
Output is correct |
9 |
Correct |
313 ms |
67032 KB |
Output is correct |
10 |
Correct |
326 ms |
67068 KB |
Output is correct |
11 |
Correct |
293 ms |
66624 KB |
Output is correct |
12 |
Correct |
251 ms |
65860 KB |
Output is correct |
13 |
Correct |
373 ms |
70588 KB |
Output is correct |
14 |
Correct |
394 ms |
70856 KB |
Output is correct |
15 |
Correct |
391 ms |
70592 KB |
Output is correct |
16 |
Correct |
397 ms |
70712 KB |
Output is correct |
17 |
Correct |
369 ms |
70148 KB |
Output is correct |
18 |
Correct |
309 ms |
67312 KB |
Output is correct |
19 |
Correct |
365 ms |
70592 KB |
Output is correct |
20 |
Correct |
398 ms |
70792 KB |
Output is correct |
21 |
Correct |
382 ms |
70656 KB |
Output is correct |
22 |
Correct |
374 ms |
70592 KB |
Output is correct |
23 |
Correct |
368 ms |
70220 KB |
Output is correct |
24 |
Correct |
271 ms |
67388 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
8028 KB |
Output is correct |
2 |
Correct |
2 ms |
8028 KB |
Output is correct |
3 |
Correct |
2 ms |
8028 KB |
Output is correct |
4 |
Correct |
2 ms |
8028 KB |
Output is correct |
5 |
Correct |
2 ms |
8028 KB |
Output is correct |
6 |
Correct |
2 ms |
8028 KB |
Output is correct |
7 |
Correct |
2 ms |
8028 KB |
Output is correct |
8 |
Correct |
2 ms |
8028 KB |
Output is correct |
9 |
Correct |
2 ms |
8024 KB |
Output is correct |
10 |
Correct |
2 ms |
8024 KB |
Output is correct |
11 |
Correct |
3 ms |
8364 KB |
Output is correct |
12 |
Correct |
3 ms |
8028 KB |
Output is correct |
13 |
Correct |
2 ms |
8028 KB |
Output is correct |
14 |
Correct |
2 ms |
8028 KB |
Output is correct |
15 |
Correct |
2 ms |
8028 KB |
Output is correct |
16 |
Correct |
2 ms |
8024 KB |
Output is correct |
17 |
Correct |
2 ms |
8028 KB |
Output is correct |
18 |
Correct |
3 ms |
8028 KB |
Output is correct |
19 |
Correct |
5 ms |
8540 KB |
Output is correct |
20 |
Correct |
5 ms |
8540 KB |
Output is correct |
21 |
Correct |
5 ms |
8488 KB |
Output is correct |
22 |
Correct |
6 ms |
8540 KB |
Output is correct |
23 |
Correct |
9 ms |
10756 KB |
Output is correct |
24 |
Correct |
9 ms |
10844 KB |
Output is correct |
25 |
Correct |
9 ms |
10844 KB |
Output is correct |
26 |
Correct |
10 ms |
11100 KB |
Output is correct |
27 |
Correct |
2 ms |
8028 KB |
Output is correct |
28 |
Correct |
2 ms |
8028 KB |
Output is correct |
29 |
Correct |
2 ms |
8028 KB |
Output is correct |
30 |
Correct |
7 ms |
8284 KB |
Output is correct |
31 |
Correct |
26 ms |
9044 KB |
Output is correct |
32 |
Correct |
2 ms |
8024 KB |
Output is correct |
33 |
Correct |
2 ms |
8284 KB |
Output is correct |
34 |
Correct |
2 ms |
8284 KB |
Output is correct |
35 |
Correct |
3 ms |
8284 KB |
Output is correct |
36 |
Correct |
9 ms |
8608 KB |
Output is correct |
37 |
Correct |
34 ms |
9552 KB |
Output is correct |
38 |
Correct |
5 ms |
10588 KB |
Output is correct |
39 |
Correct |
5 ms |
10696 KB |
Output is correct |
40 |
Correct |
5 ms |
10744 KB |
Output is correct |
41 |
Correct |
13 ms |
10844 KB |
Output is correct |
42 |
Correct |
46 ms |
12132 KB |
Output is correct |
43 |
Correct |
68 ms |
59460 KB |
Output is correct |
44 |
Correct |
68 ms |
59464 KB |
Output is correct |
45 |
Correct |
72 ms |
59588 KB |
Output is correct |
46 |
Correct |
85 ms |
59784 KB |
Output is correct |
47 |
Correct |
194 ms |
61060 KB |
Output is correct |
48 |
Correct |
3 ms |
8536 KB |
Output is correct |
49 |
Correct |
7 ms |
8792 KB |
Output is correct |
50 |
Correct |
28 ms |
9308 KB |
Output is correct |
51 |
Correct |
45 ms |
10020 KB |
Output is correct |
52 |
Correct |
10 ms |
13276 KB |
Output is correct |
53 |
Correct |
15 ms |
13528 KB |
Output is correct |
54 |
Correct |
41 ms |
14164 KB |
Output is correct |
55 |
Correct |
65 ms |
14848 KB |
Output is correct |
56 |
Correct |
51 ms |
34460 KB |
Output is correct |
57 |
Correct |
56 ms |
34500 KB |
Output is correct |
58 |
Correct |
85 ms |
35268 KB |
Output is correct |
59 |
Correct |
130 ms |
36076 KB |
Output is correct |
60 |
Correct |
96 ms |
60608 KB |
Output is correct |
61 |
Correct |
101 ms |
60712 KB |
Output is correct |
62 |
Correct |
156 ms |
61372 KB |
Output is correct |
63 |
Correct |
189 ms |
62396 KB |
Output is correct |
64 |
Correct |
196 ms |
62092 KB |
Output is correct |
65 |
Correct |
296 ms |
64448 KB |
Output is correct |
66 |
Correct |
300 ms |
64700 KB |
Output is correct |
67 |
Correct |
279 ms |
64572 KB |
Output is correct |
68 |
Correct |
293 ms |
64564 KB |
Output is correct |
69 |
Correct |
274 ms |
64440 KB |
Output is correct |
70 |
Correct |
222 ms |
64324 KB |
Output is correct |
71 |
Correct |
334 ms |
66784 KB |
Output is correct |
72 |
Correct |
316 ms |
66912 KB |
Output is correct |
73 |
Correct |
313 ms |
67032 KB |
Output is correct |
74 |
Correct |
326 ms |
67068 KB |
Output is correct |
75 |
Correct |
293 ms |
66624 KB |
Output is correct |
76 |
Correct |
251 ms |
65860 KB |
Output is correct |
77 |
Correct |
373 ms |
70588 KB |
Output is correct |
78 |
Correct |
394 ms |
70856 KB |
Output is correct |
79 |
Correct |
391 ms |
70592 KB |
Output is correct |
80 |
Correct |
397 ms |
70712 KB |
Output is correct |
81 |
Correct |
369 ms |
70148 KB |
Output is correct |
82 |
Correct |
309 ms |
67312 KB |
Output is correct |
83 |
Correct |
365 ms |
70592 KB |
Output is correct |
84 |
Correct |
398 ms |
70792 KB |
Output is correct |
85 |
Correct |
382 ms |
70656 KB |
Output is correct |
86 |
Correct |
374 ms |
70592 KB |
Output is correct |
87 |
Correct |
368 ms |
70220 KB |
Output is correct |
88 |
Correct |
271 ms |
67388 KB |
Output is correct |
89 |
Correct |
310 ms |
63668 KB |
Output is correct |
90 |
Correct |
287 ms |
64044 KB |
Output is correct |
91 |
Correct |
288 ms |
65056 KB |
Output is correct |
92 |
Correct |
307 ms |
65216 KB |
Output is correct |
93 |
Correct |
327 ms |
67524 KB |
Output is correct |
94 |
Correct |
350 ms |
66608 KB |
Output is correct |
95 |
Correct |
376 ms |
68192 KB |
Output is correct |
96 |
Correct |
361 ms |
67080 KB |
Output is correct |
97 |
Correct |
377 ms |
68092 KB |
Output is correct |
98 |
Correct |
403 ms |
69708 KB |
Output is correct |
99 |
Correct |
383 ms |
67752 KB |
Output is correct |
100 |
Correct |
380 ms |
67776 KB |
Output is correct |