Submission #3982796
Source Code Expand
#include<bits/stdc++.h> using namespace std; #define ma 100010 int n,m,c; int oya[ma],fukasa[ma]; int p[ma],x[ma],y[ma]; int find(int i){ if(oya[i]==i){ return i; }else{ return oya[i]=find(oya[i]); } } void unite(int i,int j){ i=find(i); j=find(j); if(i==j) return; if(fukasa[i]<fukasa[j]){ oya[i]=j; }else{ oya[j]=i; if(fukasa[i]==fukasa[j]) fukasa[i]++; } } int main(){ cin>>n>>m; for(int i=1;i<=n;i++){ cin>>p[i]; oya[p[i]]=p[i]; } for(int i=0;i<m;i++){ cin>>x[i]>>y[i]; unite(x[i],y[i]); } for(int i=1;i<=n;i++){ if(find(i)==find(p[i])) c++; } cout<<c<<endl; }
Submission Info
Submission Time | |
---|---|
Task | D - Equals |
User | occhan |
Language | C++14 (GCC 5.4.1) |
Score | 400 |
Code Size | 676 Byte |
Status | AC |
Exec Time | 112 ms |
Memory | 2176 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 400 / 400 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | 0_000.txt, 0_001.txt, 0_002.txt, 0_003.txt |
All | 0_000.txt, 0_001.txt, 0_002.txt, 0_003.txt, 1_004.txt, 1_005.txt, 1_006.txt, 1_007.txt, 1_008.txt, 1_009.txt, 1_010.txt, 1_011.txt, 1_012.txt, 1_013.txt, 1_014.txt, 1_015.txt, 1_016.txt, 1_017.txt, 1_018.txt, 1_019.txt, 1_020.txt, 1_021.txt, 1_022.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
0_000.txt | AC | 1 ms | 256 KB |
0_001.txt | AC | 1 ms | 256 KB |
0_002.txt | AC | 1 ms | 256 KB |
0_003.txt | AC | 1 ms | 256 KB |
1_004.txt | AC | 53 ms | 1024 KB |
1_005.txt | AC | 107 ms | 2048 KB |
1_006.txt | AC | 112 ms | 2176 KB |
1_007.txt | AC | 1 ms | 256 KB |
1_008.txt | AC | 1 ms | 256 KB |
1_009.txt | AC | 1 ms | 256 KB |
1_010.txt | AC | 1 ms | 256 KB |
1_011.txt | AC | 1 ms | 256 KB |
1_012.txt | AC | 1 ms | 256 KB |
1_013.txt | AC | 2 ms | 256 KB |
1_014.txt | AC | 4 ms | 256 KB |
1_015.txt | AC | 2 ms | 256 KB |
1_016.txt | AC | 2 ms | 256 KB |
1_017.txt | AC | 2 ms | 256 KB |
1_018.txt | AC | 48 ms | 1024 KB |
1_019.txt | AC | 37 ms | 1024 KB |
1_020.txt | AC | 37 ms | 1280 KB |
1_021.txt | AC | 37 ms | 1408 KB |
1_022.txt | AC | 110 ms | 2176 KB |