using namespace std;
#include <iostream>
#include <algorithm>
#include <queue>
#include <stack>
#include <deque>
#include <map>
#include <set>
#include <utility>
#include <memory.h>
#include <vector>
#include <bitset>
typedef pair<int,int> pii;
typedef long long LL;
#define iter(x) x.begin(),x.end()
#define F first
#define S second
#define pb push_back
#define mkp make_pair
#include <climits>
const int maxn = 1e5+10,mod = 0;
struct EDGE{
int u,v;
LL w;
int con_to(int e){
return u == e ? v : u;
}
}edge[maxn];
vector <int> adj[maxn];
vector <pii> son[maxn];
int father[maxn];
pair<LL,LL> dp[maxn];
LL ans[maxn];
void update(pair <LL,LL> &onto,LL fr){
if (fr > onto.F){
onto.S = onto.F;
onto.F = fr;
}
else if (fr > onto.S){
onto.S = fr;
}
}
void dfs(int x,int fr){
father[x] = fr;
for (auto i:adj[x]) if (edge[i].con_to(x) != fr){
son[x].pb(mkp(edge[i].con_to(x),i));
dfs(edge[i].con_to(x),x);
ans[x] = max(ans[x],ans[edge[i].con_to(x)]);
update(dp[x], dp[edge[i].con_to(x)].F + edge[i].w);
}
ans[x] = max(ans[x],dp[x].F + dp[x].S);
}
void upd(int x){
ans[x] = 0;
dp[x] = {};
for (auto [i,ed]:son[x]){
ans[x] = max(ans[x],ans[i]);
update(dp[x], dp[i].F + edge[ed].w);
}
ans[x] = max(ans[x],dp[x].F + dp[x].S);
}
int main(){
ios_base::sync_with_stdio(false); cin.tie(0);
int n,q;
LL w;
cin >> n >> q >> w;
for (int i=0;i<n-1;++i){
int u,v; LL c;
cin >> u >> v >> c;
edge[i] = {u,v,c};
adj[u].pb(i);
adj[v].pb(i);
}
dfs(1,0);
LL last = 0;
while (q--){
LL d,e;
cin >> d >> e;
d = (d + last) % (n-1);
e = (e + last) % w;
edge[d].w = e;
int u = father[edge[d].u] == edge[d].v ? edge[d].v : edge[d].u;
while (u){
upd(u);
u = father[u];
}
last = ans[1];
cout /*<< d << ' ' << e << ' ' */<< last << '\n';
}
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
4940 KB |
Output is correct |
2 |
Correct |
4 ms |
4940 KB |
Output is correct |
3 |
Correct |
3 ms |
4940 KB |
Output is correct |
4 |
Correct |
3 ms |
4940 KB |
Output is correct |
5 |
Correct |
3 ms |
4940 KB |
Output is correct |
6 |
Correct |
3 ms |
4940 KB |
Output is correct |
7 |
Correct |
3 ms |
4928 KB |
Output is correct |
8 |
Correct |
3 ms |
5044 KB |
Output is correct |
9 |
Correct |
3 ms |
4940 KB |
Output is correct |
10 |
Correct |
3 ms |
4940 KB |
Output is correct |
11 |
Correct |
3 ms |
4940 KB |
Output is correct |
12 |
Correct |
3 ms |
4940 KB |
Output is correct |
13 |
Correct |
3 ms |
4940 KB |
Output is correct |
14 |
Correct |
3 ms |
4940 KB |
Output is correct |
15 |
Correct |
3 ms |
4980 KB |
Output is correct |
16 |
Correct |
3 ms |
4940 KB |
Output is correct |
17 |
Correct |
4 ms |
4940 KB |
Output is correct |
18 |
Correct |
3 ms |
4940 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
4940 KB |
Output is correct |
2 |
Correct |
4 ms |
4940 KB |
Output is correct |
3 |
Correct |
3 ms |
4940 KB |
Output is correct |
4 |
Correct |
3 ms |
4940 KB |
Output is correct |
5 |
Correct |
3 ms |
4940 KB |
Output is correct |
6 |
Correct |
3 ms |
4940 KB |
Output is correct |
7 |
Correct |
3 ms |
4928 KB |
Output is correct |
8 |
Correct |
3 ms |
5044 KB |
Output is correct |
9 |
Correct |
3 ms |
4940 KB |
Output is correct |
10 |
Correct |
3 ms |
4940 KB |
Output is correct |
11 |
Correct |
3 ms |
4940 KB |
Output is correct |
12 |
Correct |
3 ms |
4940 KB |
Output is correct |
13 |
Correct |
3 ms |
4940 KB |
Output is correct |
14 |
Correct |
3 ms |
4940 KB |
Output is correct |
15 |
Correct |
3 ms |
4980 KB |
Output is correct |
16 |
Correct |
3 ms |
4940 KB |
Output is correct |
17 |
Correct |
4 ms |
4940 KB |
Output is correct |
18 |
Correct |
3 ms |
4940 KB |
Output is correct |
19 |
Correct |
8 ms |
5132 KB |
Output is correct |
20 |
Correct |
8 ms |
5068 KB |
Output is correct |
21 |
Correct |
14 ms |
5180 KB |
Output is correct |
22 |
Correct |
21 ms |
5236 KB |
Output is correct |
23 |
Correct |
12 ms |
5524 KB |
Output is correct |
24 |
Correct |
18 ms |
5452 KB |
Output is correct |
25 |
Correct |
42 ms |
5600 KB |
Output is correct |
26 |
Correct |
186 ms |
6104 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
4940 KB |
Output is correct |
2 |
Correct |
3 ms |
4940 KB |
Output is correct |
3 |
Correct |
4 ms |
4940 KB |
Output is correct |
4 |
Correct |
10 ms |
5124 KB |
Output is correct |
5 |
Correct |
38 ms |
5344 KB |
Output is correct |
6 |
Correct |
3 ms |
4940 KB |
Output is correct |
7 |
Correct |
3 ms |
5068 KB |
Output is correct |
8 |
Correct |
4 ms |
5068 KB |
Output is correct |
9 |
Correct |
6 ms |
5068 KB |
Output is correct |
10 |
Correct |
34 ms |
5116 KB |
Output is correct |
11 |
Correct |
144 ms |
5472 KB |
Output is correct |
12 |
Correct |
6 ms |
5408 KB |
Output is correct |
13 |
Correct |
8 ms |
5456 KB |
Output is correct |
14 |
Correct |
27 ms |
5452 KB |
Output is correct |
15 |
Correct |
217 ms |
5460 KB |
Output is correct |
16 |
Correct |
1085 ms |
5936 KB |
Output is correct |
17 |
Correct |
45 ms |
12092 KB |
Output is correct |
18 |
Correct |
83 ms |
12108 KB |
Output is correct |
19 |
Correct |
463 ms |
12196 KB |
Output is correct |
20 |
Correct |
4347 ms |
12328 KB |
Output is correct |
21 |
Execution timed out |
5009 ms |
12416 KB |
Time limit exceeded |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
5068 KB |
Output is correct |
2 |
Correct |
7 ms |
5156 KB |
Output is correct |
3 |
Correct |
24 ms |
5332 KB |
Output is correct |
4 |
Correct |
45 ms |
5536 KB |
Output is correct |
5 |
Correct |
9 ms |
5836 KB |
Output is correct |
6 |
Correct |
14 ms |
5872 KB |
Output is correct |
7 |
Correct |
30 ms |
6088 KB |
Output is correct |
8 |
Correct |
52 ms |
6344 KB |
Output is correct |
9 |
Correct |
30 ms |
9108 KB |
Output is correct |
10 |
Correct |
33 ms |
9132 KB |
Output is correct |
11 |
Correct |
54 ms |
9408 KB |
Output is correct |
12 |
Correct |
83 ms |
9608 KB |
Output is correct |
13 |
Correct |
56 ms |
13132 KB |
Output is correct |
14 |
Correct |
60 ms |
13220 KB |
Output is correct |
15 |
Correct |
81 ms |
13452 KB |
Output is correct |
16 |
Correct |
122 ms |
13808 KB |
Output is correct |
17 |
Correct |
156 ms |
13924 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3415 ms |
16096 KB |
Output is correct |
2 |
Correct |
3239 ms |
20192 KB |
Output is correct |
3 |
Correct |
3109 ms |
18984 KB |
Output is correct |
4 |
Correct |
3953 ms |
16080 KB |
Output is correct |
5 |
Execution timed out |
5049 ms |
15352 KB |
Time limit exceeded |
6 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
4940 KB |
Output is correct |
2 |
Correct |
4 ms |
4940 KB |
Output is correct |
3 |
Correct |
3 ms |
4940 KB |
Output is correct |
4 |
Correct |
3 ms |
4940 KB |
Output is correct |
5 |
Correct |
3 ms |
4940 KB |
Output is correct |
6 |
Correct |
3 ms |
4940 KB |
Output is correct |
7 |
Correct |
3 ms |
4928 KB |
Output is correct |
8 |
Correct |
3 ms |
5044 KB |
Output is correct |
9 |
Correct |
3 ms |
4940 KB |
Output is correct |
10 |
Correct |
3 ms |
4940 KB |
Output is correct |
11 |
Correct |
3 ms |
4940 KB |
Output is correct |
12 |
Correct |
3 ms |
4940 KB |
Output is correct |
13 |
Correct |
3 ms |
4940 KB |
Output is correct |
14 |
Correct |
3 ms |
4940 KB |
Output is correct |
15 |
Correct |
3 ms |
4980 KB |
Output is correct |
16 |
Correct |
3 ms |
4940 KB |
Output is correct |
17 |
Correct |
4 ms |
4940 KB |
Output is correct |
18 |
Correct |
3 ms |
4940 KB |
Output is correct |
19 |
Correct |
8 ms |
5132 KB |
Output is correct |
20 |
Correct |
8 ms |
5068 KB |
Output is correct |
21 |
Correct |
14 ms |
5180 KB |
Output is correct |
22 |
Correct |
21 ms |
5236 KB |
Output is correct |
23 |
Correct |
12 ms |
5524 KB |
Output is correct |
24 |
Correct |
18 ms |
5452 KB |
Output is correct |
25 |
Correct |
42 ms |
5600 KB |
Output is correct |
26 |
Correct |
186 ms |
6104 KB |
Output is correct |
27 |
Correct |
3 ms |
4940 KB |
Output is correct |
28 |
Correct |
3 ms |
4940 KB |
Output is correct |
29 |
Correct |
4 ms |
4940 KB |
Output is correct |
30 |
Correct |
10 ms |
5124 KB |
Output is correct |
31 |
Correct |
38 ms |
5344 KB |
Output is correct |
32 |
Correct |
3 ms |
4940 KB |
Output is correct |
33 |
Correct |
3 ms |
5068 KB |
Output is correct |
34 |
Correct |
4 ms |
5068 KB |
Output is correct |
35 |
Correct |
6 ms |
5068 KB |
Output is correct |
36 |
Correct |
34 ms |
5116 KB |
Output is correct |
37 |
Correct |
144 ms |
5472 KB |
Output is correct |
38 |
Correct |
6 ms |
5408 KB |
Output is correct |
39 |
Correct |
8 ms |
5456 KB |
Output is correct |
40 |
Correct |
27 ms |
5452 KB |
Output is correct |
41 |
Correct |
217 ms |
5460 KB |
Output is correct |
42 |
Correct |
1085 ms |
5936 KB |
Output is correct |
43 |
Correct |
45 ms |
12092 KB |
Output is correct |
44 |
Correct |
83 ms |
12108 KB |
Output is correct |
45 |
Correct |
463 ms |
12196 KB |
Output is correct |
46 |
Correct |
4347 ms |
12328 KB |
Output is correct |
47 |
Execution timed out |
5009 ms |
12416 KB |
Time limit exceeded |