/// yay heavy
/// bine ca scap de mle da acum iau tle
#include <bits/stdc++.h>
#define DIM 30002
/*#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC optimize("O3")*/
using namespace std;
vector <short> L[DIM],w,aux;
vector <short> chains[DIM];
//short chains[DIM];
int aib[20][21][DIM];
short whatChain[DIM],chainFatherNode[DIM],Size[DIM],posAib[DIM];
short level[DIM],fth[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){
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);
Size[nod] += Size[vecin];
}}
if (!ok){
nr_chains++;
chains[nr_chains].push_back(0);
chains[nr_chains].push_back(nod);
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;
}}}
void drum (int x, int y){
w.clear();
aux.clear();
while (x != y){
if (level[x] > level[y]){
w.push_back(x);
x = fth[x];
} else {
aux.push_back(y);
y = fth[y];
}
}
w.push_back(x);
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);
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);
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);
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 t1, int t2){
long long sol1 = 0, sol2 = 0;
for (int a=0;a<20;++a){
for (int b=1;b<=20;++b){
sum = 0;
query_heavy (x,y,a,b);
if (t2 >= a){
int nr = (t2 - a) / b + 1;
sol2 += 1LL * nr * sum;
}
if (t1 >= a){
int nr = (t1 - a) / b + 1;
sol1 += 1LL * nr * sum;
}
}
}
return sol2 - sol1;
}
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;
}
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,t1-1,t2)<<"\n";
}
return 0;
}
Compilation message
traffickers.cpp: In function 'int main()':
traffickers.cpp:186:19: 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 |
15 ms |
3584 KB |
Output is correct |
| 3 |
Correct |
17 ms |
3456 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
187 ms |
11000 KB |
Output is correct |
| 2 |
Correct |
219 ms |
9208 KB |
Output is correct |
| 3 |
Correct |
171 ms |
11796 KB |
Output is correct |
| 4 |
Correct |
208 ms |
11000 KB |
Output is correct |
| 5 |
Correct |
236 ms |
10496 KB |
Output is correct |
| 6 |
Correct |
224 ms |
10872 KB |
Output is correct |
| 7 |
Correct |
205 ms |
11128 KB |
Output is correct |
| 8 |
Correct |
178 ms |
11776 KB |
Output is correct |
| 9 |
Correct |
191 ms |
12152 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2743 ms |
27512 KB |
Output is correct |
| 2 |
Correct |
2221 ms |
30328 KB |
Output is correct |
| 3 |
Correct |
2270 ms |
30072 KB |
Output is correct |
| 4 |
Execution timed out |
3518 ms |
25928 KB |
Time limit exceeded |
| 5 |
Execution timed out |
3573 ms |
27168 KB |
Time limit exceeded |
| 6 |
Correct |
2224 ms |
30584 KB |
Output is correct |
| 7 |
Correct |
2456 ms |
30828 KB |
Output is correct |
| 8 |
Correct |
2449 ms |
30224 KB |
Output is correct |
