Submission #1141717

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1141717	2025-01-29 07:33:08	Noproblem29	Collapse (JOI18_collapse)	C++20	5 / 100	220 ms	100176 KiB

collapse

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include "collapse.h"
#include <bits/stdc++.h>
using namespace std;
const int N=1e5+100;
#define ll long long
int n,m,q;
int p[N];
int pos[N];
vector<int>ans;
int dsu(int x){
  while(p[x]>=0)x=p[x];
  return x;
}
int sz;
stack<tuple<int,int,bool>>st;
void merge(int x,int y){
    x=dsu(x);
    y=dsu(y);
    if(x==y)return;
    if(p[x]<p[y])swap(x,y);
    st.push({x,p[x],(p[x]==p[y])});
    if(p[x]==p[y]){
        p[y]--;
    }
    sz--;
    p[x]=y;
}
void rollback(int t){
    while(st.size()>t){
        auto [x,pxe,ch]=st.top();
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

• Subtask 1: 5 / 5
• Subtask 2: 0 / 30
• Subtask 3: 0 / 30
• Subtask 4: 0 / 35