#include <bits/stdc++.h>
#define DIM 30010
using namespace std;
vector <int> L[DIM],w,aux;
vector <int> chains[DIM],aib[22][22][DIM];
int whatChain[DIM],positionInChain[DIM],chainFatherNode[DIM],Size[DIM];
int E[DIM*3],level[DIM],fth[DIM],first[DIM],p[DIM*3];
int cnt[DIM][22][22];
pair <int,int> rmq[20][DIM];
int n,m,i,j,x,y,tip,q,k,t1,t2,nr_chains,sum;
void update_aib (int a, int b, int chain, int p, int n, int val){
for (;p<=n;p+=(p&-p))
aib[a][b][chain][p] += val;
}
int query_aib (int a, int b, int chain, int p){
if (!p)
return 0;
int sol = 0;
for (;p;p-=(p&-p))
sol += aib[a][b][chain][p];
return sol;
}
int get_sum (int a, int b, int chain, int x, int y){
return query_aib (a,b,chain,y) - query_aib (a,b,chain,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,whatChain[nod],positionInChain[nod],chains[whatChain[nod]].size()-1,1);
t++;
}
}
void scoate (int x, int y){
drum (x,y);
int t = 0, lg = w.size();
for (auto nod : w){
update_aib(t,lg,whatChain[nod],positionInChain[nod],chains[whatChain[nod]].size()-1,-1);
t++;
}
}
void query_heavy (int x, int y, int a, int b){
if (whatChain[x] == whatChain[y]){
int posx = positionInChain[x], posy = positionInChain[y];
if (posx > posy)
swap (posx, posy);
sum += get_sum (a,b,whatChain[x],posx,posy);
return;
}
if (level[chainFatherNode[whatChain[x]]] <= level[chainFatherNode[whatChain[y]]])
swap (x,y);
int posx = positionInChain[x], posy = chains[whatChain[x]].size()-1;
sum += get_sum (a,b,whatChain[x],posx,posy);
int nr = chainFatherNode[whatChain[x]];
query_heavy (nr,y,a,b);
}
int solve (int x, int y, int t){
if (t < 0)
return 0;
int 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 += 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);
for (int a=0;a<=20;a++)
for (int b=0;b<=20;b++)
for (i=1;i<=nr_chains;i++)
for (j=0;j<=chains[i].size();j++)
aib[a][b][i].push_back(0);
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:180:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (j=0;j<=chains[i].size();j++)
~^~~~~~~~~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
183 ms |
343160 KB |
Output is correct |
| 2 |
Correct |
208 ms |
345848 KB |
Output is correct |
| 3 |
Correct |
243 ms |
350328 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
923 ms |
396804 KB |
Output isn't correct |
| 2 |
Incorrect |
1117 ms |
412280 KB |
Output isn't correct |
| 3 |
Incorrect |
629 ms |
371448 KB |
Output isn't correct |
| 4 |
Incorrect |
940 ms |
404600 KB |
Output isn't correct |
| 5 |
Incorrect |
1085 ms |
417528 KB |
Output isn't correct |
| 6 |
Incorrect |
983 ms |
410872 KB |
Output isn't correct |
| 7 |
Incorrect |
970 ms |
402612 KB |
Output isn't correct |
| 8 |
Incorrect |
678 ms |
371960 KB |
Output isn't correct |
| 9 |
Incorrect |
695 ms |
368252 KB |
Output isn't correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Runtime error |
848 ms |
524288 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 2 |
Runtime error |
629 ms |
524292 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 3 |
Runtime error |
556 ms |
524292 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 4 |
Runtime error |
960 ms |
524292 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 5 |
Runtime error |
993 ms |
524292 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 6 |
Runtime error |
621 ms |
524288 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 7 |
Runtime error |
479 ms |
524292 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 8 |
Runtime error |
484 ms |
524292 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
