#include <bits/stdc++.h>
using namespace std;
#define in ({int x=0;int c=getchar(),n=0;for(;!isdigit(c);c=getchar()) n=(c=='-');for(;isdigit(c);c=getchar()) x=x*10+c-'0';n?-x:x;})
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int rnd(int l,int r){return l+rng()%(r-l+1);}
#define fasty ios_base::sync_with_stdio(false),cin.tie(nullptr);
#define task "B"
#define forinc(a,b,c) for(int a=b,_c=c;a<=_c;++a)
#define fordec(a,b,c) for(int a=b,_c=c;a>=_c;--a)
#define forv(a,b) for(auto&a:b)
#define fi first
#define se second
#define pb push_back
#define ii pair<int,int>
#define mt make_tuple
#define all(a) a.begin(),a.end()
#define reset(f, x) memset(f, x, sizeof(f))
#define bit(x,i) ((x>>(i-1))&1)
#define on(x,i) (x|(1ll<<(i-1)))
#define off(x,i) (x&~(1<<(i-1)))
const int N=100010;
struct ed{
int u,v,c,i;
}e[N];
struct qr{
int o,u,x,i;
}q[N];
struct dt{
int x,y,X,Y;
};
stack<dt> st;
int n,m,t;
int T=200,mode;
int id[N],b[N],ans[N];
vector<int> mm[N];
int root(int x){
return id[x]<0?x:root(id[x]);
}
void join(int x,int y){
if((x=root(x))==(y=root(y))) return;
if(mode){
st.push({x,y,id[x],id[y]});
}
if(id[x]>id[y]) swap(x,y);
id[x]+=id[y];
id[y]=x;
}
main(){
//freopen(task".inp","r",stdin);
//freopen(task".out","w",stdout);
n=in;
forinc(i,1,m=in) e[i]={in,in,in,i};
forinc(i,1,t=in) q[i]={in,in,in,i};
forinc(i,1,t){
if(q[i].o==1) mm[q[i].u].pb(i);
b[i]=(i-1)/T+1;
}
forinc(i,1,t){
if(b[i]==b[i-1]) continue;
vector<ed> E;
vector<qr> Q;
reset(id,-1);
int j=i,l=i,r=b[i]*T > t ? t : b[i]*T;
while(j<=t && b[j]==b[i]){
if(q[j].o==2) Q.pb(q[j]);
j++;
}
sort(all(Q),[](qr i,qr j){
return i.x>j.x;
});
forinc(j,1,m){
auto x=e[j];
auto y=lower_bound(all(mm[x.i]),i);
if(y==mm[x.i].end() || *y>r) E.pb(x);
}
sort(all(E),[](ed i,ed j){
return i.c>j.c;
});
int k=0;
forinc(j,0,Q.size()-1){
while(k<E.size() && E[k].c>=Q[j].x){
join(E[k].u,E[k].v);
k++;
}
mode=1;
forinc(k,l,r) if(q[k].o==1){
auto y=lower_bound(all(mm[q[k].u]),l);
if(y==mm[q[k].u].end() || *y>r) continue;
y=lower_bound(all(mm[q[k].u]),Q[j].i);
if(y==mm[q[k].u].begin() && e[q[*y].u].c>=Q[j].x){
join(e[q[*y].u].u,e[q[*y].u].v);
continue;
}
y--;
if(k==*y && q[*y].x>=Q[j].x || *y<l && e[q[k].u].c>=Q[j].x){
join(e[q[*y].u].u,e[q[*y].u].v);
}
}
mode=0;
ans[Q[j].i]=-id[root(Q[j].u)];
while(st.size()){
auto x=st.top(); st.pop();
id[x.x]=x.X;
id[x.y]=x.Y;
}
}
}
forinc(i,1,t) if(q[i].o==2) cout<<ans[i]<<"\n";
}
Compilation message
bridges.cpp:54:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
main(){
^
bridges.cpp: In function 'int main()':
bridges.cpp:87:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
while(k<E.size() && E[k].c>=Q[j].x){
~^~~~~~~~~
bridges.cpp:101:26: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
if(k==*y && q[*y].x>=Q[j].x || *y<l && e[q[k].u].c>=Q[j].x){
~~~~~~^~~~~~~~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
3072 KB |
Output is correct |
2 |
Correct |
4 ms |
3072 KB |
Output is correct |
3 |
Incorrect |
24 ms |
3456 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
3097 ms |
11904 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2247 ms |
10480 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
3025 ms |
14452 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
3097 ms |
11904 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
3072 KB |
Output is correct |
2 |
Correct |
4 ms |
3072 KB |
Output is correct |
3 |
Incorrect |
24 ms |
3456 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |