Submission #420188
Source Code Expand
#include <bits/stdc++.h>
using namespace std;
#define REP(i,n) for(int i=0;i<(int)(n);++i)
#define REPR(i,n) for (int i=(int)(n)-1;i>=0;--i)
#define FOR(i,c) for(__typeof((c).begin())i=(c).begin();i!=(c).end();++i)
#define ALL(c) (c).begin(), (c).end()
#define valid(y,x,h,w) (0<=y&&y<h&&0<=x&&x<w)
#define tpl(...) make_tuple(__VA_ARGS__)
const int INF = 0x3f3f3f3f;
const double EPS = 1e-8;
const double PI = acos(-1);
const int dy[] = {-1,0,1,0};
const int dx[] = {0,1,0,-1};
typedef long long ll;
typedef pair<int,int> pii;
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }
template<typename Ch,typename Tr,typename C,typename=decltype(begin(C()))>basic_ostream<Ch,Tr>& operator<<(basic_ostream<Ch,Tr>&os,
const C& c){os<<'[';for(auto i=begin(c);i!=end(c);++i)os<<(i==begin(c)?"":" ")<<*i;return os<<']';}
template<class S,class T>ostream&operator<<(ostream &o,const pair<S,T>&t){return o<<'('<<t.first<<','<<t.second<<')';}
template<int N,class Tp>void output(ostream&,const Tp&){}
template<int N,class Tp,class,class ...Ts>void output(ostream &o,const Tp&t){if(N)o<<',';o<<get<N>(t);output<N+1,Tp,Ts...>(o,t);}
template<class ...Ts>ostream&operator<<(ostream&o,const tuple<Ts...>&t){o<<'(';output<0,tuple<Ts...>,Ts...>(o,t);return o<<')';}
template<class T>void output(T t,char z=10){if(t<0)t=-t,putchar(45);int c[20];
int k=0;while(t)c[k++]=t%10,t/=10;for(k||(c[k++]=0);k;)putchar(c[--k]^48);putchar(z);}
template<class T>void outputs(T t){output(t);}
template<class S,class ...T>void outputs(S a,T...t){output(a,32);outputs(t...);}
template<class T>void output(T *a,int n){REP(i,n)cout<<a[i]<<(i!=n-1?',':'\n');}
template<class T>void output(T *a,int n,int m){REP(i,n)output(a[i],m);}
template<class T>bool input(T &t){int n=1,c;for(t=0;!isdigit(c=getchar())&&~c&&c-45;);
if(!~c)return 0;for(c-45&&(n=0,t=c^48);isdigit(c=getchar());)t=10*t+c-48;t=n?-t:t;return 1;}
template<class S,class ...T>bool input(S&a,T&...t){input(a);return input(t...);}
template<class T>bool inputs(T *a, int n) { REP(i,n) if(!input(a[i])) return 0; return 1;}
struct UnionFind {
vector<int> data;
UnionFind(int size) : data(size, -1) { }
bool unionSet(int x, int y) {
x = root(x); y = root(y);
if (x != y) {
if (data[y] < data[x]) swap(x, y);
data[x] += data[y]; data[y] = x;
}
return x != y;
}
bool findSet(int x, int y) {
return root(x) == root(y);
}
int root(int x) {
return data[x] < 0 ? x : data[x] = root(data[x]);
}
int size(int x) {
return -data[root(x)];
}
};
int main() {
int n,q;
while(input(n,q)) {
UnionFind uf(n);
REP(i,q) {
int p,a,b;
input(p,a,b);
if (p) {
puts(uf.findSet(a,b)?"Yes":"No");
} else {
uf.unionSet(a,b);
}
}
}
}
Submission Info
Submission Time |
|
Task |
B - Union Find |
User |
sune2 |
Language |
C++11 (GCC 4.9.2) |
Score |
100 |
Code Size |
2950 Byte |
Status |
AC |
Exec Time |
137 ms |
Memory |
1312 KB |
Judge Result
Set Name |
Sample |
All |
Score / Max Score |
0 / 0 |
100 / 100 |
Status |
|
|
Set Name |
Test Cases |
Sample |
00_sample_01.txt |
All |
00_sample_01.txt, subtask_01_01.txt, subtask_01_02.txt, subtask_01_03.txt, subtask_01_04.txt, subtask_01_05.txt, subtask_01_06.txt, subtask_01_07.txt, subtask_01_08.txt, subtask_01_09.txt, subtask_01_10.txt, subtask_01_11.txt, subtask_01_12.txt, subtask_01_13.txt, subtask_01_14.txt, subtask_01_15.txt, subtask_01_16.txt, subtask_01_17.txt, subtask_01_18.txt |
Case Name |
Status |
Exec Time |
Memory |
00_sample_01.txt |
AC |
30 ms |
928 KB |
subtask_01_01.txt |
AC |
83 ms |
924 KB |
subtask_01_02.txt |
AC |
26 ms |
1192 KB |
subtask_01_03.txt |
AC |
134 ms |
924 KB |
subtask_01_04.txt |
AC |
132 ms |
1176 KB |
subtask_01_05.txt |
AC |
29 ms |
800 KB |
subtask_01_06.txt |
AC |
31 ms |
1184 KB |
subtask_01_07.txt |
AC |
136 ms |
920 KB |
subtask_01_08.txt |
AC |
134 ms |
1312 KB |
subtask_01_09.txt |
AC |
27 ms |
928 KB |
subtask_01_10.txt |
AC |
27 ms |
1124 KB |
subtask_01_11.txt |
AC |
131 ms |
928 KB |
subtask_01_12.txt |
AC |
137 ms |
1308 KB |
subtask_01_13.txt |
AC |
105 ms |
800 KB |
subtask_01_14.txt |
AC |
28 ms |
1120 KB |
subtask_01_15.txt |
AC |
132 ms |
792 KB |
subtask_01_16.txt |
AC |
131 ms |
1304 KB |
subtask_01_17.txt |
AC |
80 ms |
1188 KB |
subtask_01_18.txt |
AC |
86 ms |
1188 KB |