This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include<bits/stdc++.h>
using namespace std;
const int maxn=50000+10,maxm=100000+10,sq=600;
int n,m,q,res[maxm];
struct yal{
int u,v,w,tagh,asl;
}alle[maxm];
struct qu{
int qq,ind,w;
}allq[maxm];
struct dsu{
vector<int>allv;
int par[maxn],sz[maxn];
dsu(){
for(int i=1;i<maxn;i++){
par[i]=i;
sz[i]=1;
}
}
void clear(){
allv.clear();
for(int i=1;i<maxn;i++){
par[i]=i;
sz[i]=1;
}
}
int root(int u){
if(u==par[u]){
return u;
}
return root(par[u]);
}
void con(int u,int v){
int rootu=root(u),rootv=root(v);
if(rootu!=rootv){
if(sz[rootu]<sz[rootv]){
swap(rootu,rootv);
}
allv.push_back(rootv);
par[rootv]=rootu;
sz[rootu]+=sz[rootv];
return ;
}
allv.push_back(-1);
}
int gets(int u){
return sz[root(u)];
}
void back(){
int x=allv.back();
allv.pop_back();
if(x==-1){
return ;
}
sz[par[x]]-=sz[x];
par[x]=x;
}
}ds;
vector<int>allp,allind,allval,que[maxm];
bool cmp(int a,int b){
if(alle[a].w!=alle[b].w){
return alle[a].w<alle[b].w;
}
if(alle[a].u!=alle[b].w){
return alle[a].u<alle[b].u;
}
return alle[a].v<alle[b].v;
}
void vorod(){
cin>>n>>m;
for(int i=1;i<=m;i++){
cin>>alle[i].u>>alle[i].v>>alle[i].w;
alle[i].w*=-1;
alle[i].tagh=0;
alle[i].asl=alle[i].w;
allind.push_back(i);
}
sort(allind.begin(),allind.end(),cmp);
for(auto x:allind){
allval.push_back(alle[x].w);
}
cin>>q;
for(int i=0;i<q;i++){
cin>>allq[i].qq>>allq[i].ind>>allq[i].w;
allq[i].w*=-1;
}
}
void calq(int ind){
for(auto x:que[ind]){
int l=x-(x%sq);
for(int i=l;i<x;i++){
if(allq[i].qq==1){
alle[allq[i].ind].w=allq[i].w;
}
}
for(auto y:allp){
if(allq[x].w>=alle[y].w){
ds.con(alle[y].u,alle[y].v);
}
}
res[x]=ds.gets(allq[x].ind);
for(auto y:allp){
if(allq[x].w>=alle[y].w){
ds.back();
}
}
for(int i=l;i<x;i++){
if(allq[i].qq==1){
alle[allq[i].ind].w=alle[allq[i].ind].asl;
}
}
}
que[ind].clear();
}
void solve(){
for(int l=0;l<q;l+=sq){
sort(allind.begin(),allind.end(),cmp);
allval.clear();
for(auto x:allind){
allval.push_back(alle[x].w);
}
ds.clear();
allp.clear();
for(int i=l;i<min(q,l+sq);i++){
if(allq[i].qq==1){
alle[allq[i].ind].tagh=1;
allp.push_back(allq[i].ind);
}
else{
int p=upper_bound(allval.begin(),allval.end(),allq[i].w)-allval.begin();
que[p].push_back(i);
}
}
for(int i=0;i<(int)allind.size();i++){
calq(i);
if(alle[allind[i]].tagh==0){
ds.con(alle[allind[i]].u,alle[allind[i]].v);
}
}
calq((int)allind.size());
for(int i=l;i<min(q,l+sq);i++){
if(allq[i].qq==1){
alle[allq[i].ind].tagh=0;
alle[allq[i].ind].w=alle[allq[i].ind].asl=allq[i].w;
}
}
}
}
void khor(){
for(int i=0;i<q;i++){
if(allq[i].qq==2)
cout<<res[i]<<"\n";
}
}
int main(){
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
vorod();
solve();
khor();
}
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |