/// yay heavy
/// nu mi place acel mle
#include <bits/stdc++.h>
#define DIM 30001
using namespace std;
vector <short> L[DIM],w,aux;
vector <short> chains[DIM];
//short chains[DIM];
int aib[21][21][DIM];
short whatChain[DIM],positionInChain[DIM],chainFatherNode[DIM],Size[DIM],posAib[DIM];
short E[DIM*3],level[DIM],fth[DIM],first[DIM],p[DIM*3];
pair <short,short> rmq[20][DIM];
int n,m,i,j,x,y,tip,q,k,t1,t2,nr_chains;
long long sum;
void update_aib (int a, int b, int p, int n, int val){
for (;p<=n;p+=(p&-p))
aib[a][b][p] += val;
}
long long query_aib (int a, int b, int p){
if (!p)
return 0;
long long sol = 0;
for (;p;p-=(p&-p))
sol += aib[a][b][p];
return sol;
}
long long get_sum (int a, int b, int x, int y){
return query_aib (a,b,y) - query_aib (a,b,x-1);
}
void dfs (int nod, int tata){
E[++k] = nod;
first[nod] = k;
fth[nod] = tata;
level[nod] = 1 + level[tata];
Size[nod] = 1;
int ok = 0;
for (auto vecin : L[nod]){
if (vecin != tata){
ok = 1;
dfs (vecin,nod);
E[++k] = nod;
Size[nod] += Size[vecin];
}}
if (!ok){
nr_chains++;
chains[nr_chains].push_back(0);
chains[nr_chains].push_back(nod);
positionInChain[nod] = 1;
whatChain[nod] = nr_chains;
} else {
int maxim = 0, poz = 0;
for (auto vecin : L[nod]){
if (vecin == tata)
continue;
if (Size[vecin] > maxim)
maxim = Size[vecin], poz = vecin;
}
chains[whatChain[poz]].push_back(nod);
positionInChain[nod] = chains[whatChain[poz]].size()-1;
whatChain[nod] = whatChain[poz];
for (auto vecin : L[nod]){
if (vecin == tata || vecin == poz)
continue;
chainFatherNode[whatChain[vecin]] = nod;
}}}
int get_lca (int x, int y){
int posx = first[x], posy = first[y];
if (posx > posy)
swap (posx,posy);
int nr = p[posy - posx + 1];
pair <int, int> sol = min (rmq[nr][posx], rmq[nr][posy - (1<<nr) + 1]);
return E[sol.second];
}
void drum (int x, int y){
int lca = get_lca (x,y);
w.clear();
int nod = x;
while (nod != lca){
w.push_back(nod);
nod = fth[nod];
}
w.push_back(lca);
nod = y;
aux.clear();
while (nod != lca){
aux.push_back(nod);
nod = fth[nod];
}
for (j=aux.size()-1;j>=0;j--)
w.push_back(aux[j]);
}
void adauga (int x, int y){
drum (x,y);
/// in w am lantul de la x la y
int t = 0, lg = w.size();
for (auto nod : w){
update_aib(t,lg,posAib[nod],n,1);
//int last = chains[whatChain[nod]][ chains[whatChain[nod]].size()-1 ];
//update_aib(t,lg,posAib[ last ] + 1,n,-1);
//update_aib(t,lg,posAib[nod],chains[whatChain[nod]],1);
t++;
}
}
void scoate (int x, int y){
drum (x,y);
int t = 0, lg = w.size();
for (auto nod : w){
update_aib(t,lg,posAib[nod],n,-1);
//update_aib(t,lg,posAib[ chains[whatChain[nod]][ chains[whatChain[nod]].size()-1 ] ] + 1,n,1);
//update_aib(t,lg,whatChain[nod],positionInChain[nod],chains[whatChain[nod]],-1);
t++;
}
}
void query_heavy (int x, int y, int a, int b){
if (whatChain[x] == whatChain[y]){
int posx = posAib[x], posy = posAib[y];
if (posx > posy)
swap (posx,posy);
sum += get_sum (a,b,posx,posy);
return;
}
if (level[chainFatherNode[whatChain[x]]] <= level[chainFatherNode[whatChain[y]]])
swap (x,y);
//int posx = positionInChain[x], posy = chains[whatChain[x]];
sum += get_sum (a,b,posAib[x],posAib[ chains[whatChain[x]][ chains[whatChain[x]].size()-1 ] ]);
int nr = chainFatherNode[whatChain[x]];
query_heavy (nr,y,a,b);
}
long long solve (int x, int y, int t){
if (t < 0)
return 0;
long long sol = 0;
for (int a=0;a<20;a++){
if (a > t)
break;
for (int b=1;b<=20;b++){
int nr = (t - a) / b + 1;
sum = 0;
query_heavy (x,y,a,b);
sol += 1LL * nr * sum;
}
}
return sol;
}
int main (){
// ifstream cin ("traffickers.in");
// ofstream cout ("traffickers.out");
cin>>n;
for (i=1;i<n;i++){
cin>>x>>y;
L[x].push_back(y);
L[y].push_back(x);
}
dfs (1,0);
int idx = 0;
for (i=1;i<=nr_chains;i++)
for (j=1;j<chains[i].size();j++){
int nod = chains[i][j];
posAib[nod] = ++idx;
}
for (i=1;i<=k;i++)
rmq[0][i] = make_pair(level[E[i]],i);
for (i=1;(1<<i)<=k;i++)
for (j=1;j<=k;j++){
rmq[i][j] = rmq[i-1][j];
if (j + (1<<(i-1)) <= k && rmq[i-1][j + (1<<(i-1))].first < rmq[i][j].first)
rmq[i][j] = rmq[i-1][j + (1<<(i-1))];
}
for (i=2;i<=k;i++)
p[i] = p[i/2] + 1;
cin>>m; /// nr inital de traficanti
for (i=1;i<=m;i++){
cin>>x>>y;
adauga (x,y);
}
cin>>q;
for (;q--;){
cin>>tip>>x>>y;
if (tip == 1){
adauga (x,y);
continue;
}
if (tip == 2){
scoate (x,y);
continue;
}
cin>>t1>>t2;
cout<<solve(x,y,t2) - solve(x,y,t1-1)<<"\n";
}
return 0;
}
Compilation message
traffickers.cpp: In function 'int main()':
traffickers.cpp:190:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (j=1;j<chains[i].size();j++){
~^~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
2688 KB |
Output is correct |
| 2 |
Correct |
12 ms |
3712 KB |
Output is correct |
| 3 |
Correct |
13 ms |
3584 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
305 ms |
12536 KB |
Output is correct |
| 2 |
Correct |
400 ms |
10888 KB |
Output is correct |
| 3 |
Correct |
212 ms |
12948 KB |
Output is correct |
| 4 |
Correct |
328 ms |
12408 KB |
Output is correct |
| 5 |
Correct |
414 ms |
11896 KB |
Output is correct |
| 6 |
Correct |
327 ms |
12280 KB |
Output is correct |
| 7 |
Correct |
325 ms |
12536 KB |
Output is correct |
| 8 |
Correct |
261 ms |
13304 KB |
Output is correct |
| 9 |
Correct |
331 ms |
13572 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
889 ms |
524296 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 2 |
Runtime error |
900 ms |
524292 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 3 |
Runtime error |
902 ms |
524292 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 4 |
Runtime error |
901 ms |
524292 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 5 |
Runtime error |
900 ms |
524292 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 6 |
Runtime error |
888 ms |
524292 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 7 |
Runtime error |
890 ms |
524292 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 8 |
Runtime error |
57 ms |
15736 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
