Submission #7128638
Source Code Expand
#include <iostream> #include <cstdlib> #include <vector> #include <stack> #include <string> #include <climits> #include <algorithm> #include <functional> #include <string.h> #include <numeric> #include <math.h> #define LOOP(N) for(int i=0; i<(N); ++i) #define REP(i, N) for(int i=0; i<(N); ++i) #define FOR(i, start, end) for(int i=(start); i<(end); ++i) #define ALL(a) (a).begin(),(a).end() using namespace std; using uint = unsigned int; using ll = long long; using ull = unsigned long long; using Graph = vector< vector<int> >; void sayYes() {cout << "Yes" << endl;} void sayNo() {cout << "No" << endl;} class UnionFind { vector<int> parent; vector<int> rank; public: UnionFind(int N) : parent(N), rank(N, 0) { REP(i, N) parent[i] = i; } int getRoot(int v) { return parent[v] == v ? v : parent[v] = getRoot(parent[v]); } void unite(int a, int b) { a = getRoot(parent[a]); b = getRoot(parent[b]); if (rank[a] < rank[b]) { parent[a] = b; } else { parent[b] = a; if (rank[a] == rank[b]) ++rank[a]; } } bool isSameGroup(int a, int b) { return getRoot(a) == getRoot(b); } }; int getRoot(vector<int> &lines, int v) { return lines[v] == v ? v : lines[v] = getRoot(lines, lines[v]); } int main() { int N, Q; cin >> N >> Q; UnionFind unf(N); int p, a, b; REP(i, Q) { cin >> p >> a >> b; // conbine if (p == 0) { unf.unite(a, b); } // judge if (p == 1) { if (unf.isSameGroup(a, b)) sayYes(); else sayNo(); // cout << lines[a] << " " << lines[b] << endl; } } }
Submission Info
Submission Time | |
---|---|
Task | B - Union Find |
User | scientistb |
Language | C++14 (GCC 5.4.1) |
Score | 100 |
Code Size | 1837 Byte |
Status | AC |
Exec Time | 492 ms |
Memory | 1664 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 100 / 100 | ||||
Status |
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Set Name | Test Cases |
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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 | 1 ms | 256 KB |
subtask_01_01.txt | AC | 274 ms | 640 KB |
subtask_01_02.txt | AC | 2 ms | 1024 KB |
subtask_01_03.txt | AC | 415 ms | 1024 KB |
subtask_01_04.txt | AC | 476 ms | 1664 KB |
subtask_01_05.txt | AC | 26 ms | 256 KB |
subtask_01_06.txt | AC | 26 ms | 1024 KB |
subtask_01_07.txt | AC | 433 ms | 768 KB |
subtask_01_08.txt | AC | 468 ms | 1664 KB |
subtask_01_09.txt | AC | 1 ms | 256 KB |
subtask_01_10.txt | AC | 2 ms | 1024 KB |
subtask_01_11.txt | AC | 414 ms | 896 KB |
subtask_01_12.txt | AC | 492 ms | 1664 KB |
subtask_01_13.txt | AC | 350 ms | 768 KB |
subtask_01_14.txt | AC | 3 ms | 1024 KB |
subtask_01_15.txt | AC | 424 ms | 768 KB |
subtask_01_16.txt | AC | 472 ms | 1664 KB |
subtask_01_17.txt | AC | 306 ms | 1408 KB |
subtask_01_18.txt | AC | 304 ms | 1408 KB |