Submission #991924
Source Code Expand
#include <cstdio> #include <vector> #include <algorithm> #include <functional> using namespace std; int main() { int N, M; scanf("%d%d", &N, &M); vector<vector<int>> graph(N + M); for(int i = 0; i < N; ++i) { int K; scanf("%d", &K); for(int j = 0; j < K; ++j) { int L; scanf("%d", &L); --L; graph[i].push_back(N+L); graph[N+L].push_back(i); } } vector<char> vis(N + M, false); function<void(int)> visit = [&](int v) { if(vis[v]) return; vis[v] = true; for(int w : graph[v]) { visit(w); } }; visit(0); for(int i = 0; i < N; ++i) { if(!vis[i]) { printf("NO\n"); return 0; } } printf("YES\n"); return 0; }
Submission Info
Submission Time | |
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Task | C - Interpretation |
User | qnighy |
Language | C++14 (GCC 5.4.1) |
Score | 400 |
Code Size | 735 Byte |
Status | AC |
Exec Time | 41 ms |
Memory | 8568 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:8:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int N, M; scanf("%d%d", &N, &M); ^ ./Main.cpp:11:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int K; scanf("%d", &K); ^ ./Main.cpp:13:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int L; scanf("%d", &L); --L; ^
Judge Result
Set Name | sample | dataset1 | dataset2 | ||||||
---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 200 / 200 | 200 / 200 | ||||||
Status |
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Set Name | Test Cases |
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sample | sample-01.txt, sample-02.txt |
dataset1 | sample-01.txt, sample-02.txt, 01-01.txt, 01-02.txt, 01-03.txt, 01-04.txt, 01-05.txt, 01-06.txt, 01-07.txt, 01-08.txt, 01-09.txt, 01-10.txt |
dataset2 | sample-01.txt, sample-02.txt, 01-01.txt, 01-02.txt, 01-03.txt, 01-04.txt, 01-05.txt, 01-06.txt, 01-07.txt, 01-08.txt, 01-09.txt, 01-10.txt, 02-01.txt, 02-02.txt, 02-03.txt, 02-04.txt, 02-05.txt, 02-06.txt, 02-07.txt, 02-08.txt, 02-09.txt, 02-10.txt, 02-11.txt, 02-12.txt, 02-13.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
01-01.txt | AC | 2 ms | 256 KB |
01-02.txt | AC | 3 ms | 256 KB |
01-03.txt | AC | 3 ms | 384 KB |
01-04.txt | AC | 3 ms | 256 KB |
01-05.txt | AC | 3 ms | 256 KB |
01-06.txt | AC | 3 ms | 256 KB |
01-07.txt | AC | 3 ms | 256 KB |
01-08.txt | AC | 3 ms | 256 KB |
01-09.txt | AC | 3 ms | 256 KB |
01-10.txt | AC | 3 ms | 256 KB |
02-01.txt | AC | 30 ms | 5888 KB |
02-02.txt | AC | 34 ms | 6272 KB |
02-03.txt | AC | 30 ms | 4608 KB |
02-04.txt | AC | 41 ms | 7168 KB |
02-05.txt | AC | 37 ms | 6272 KB |
02-06.txt | AC | 41 ms | 7168 KB |
02-07.txt | AC | 37 ms | 6272 KB |
02-08.txt | AC | 29 ms | 6136 KB |
02-09.txt | AC | 35 ms | 8568 KB |
02-10.txt | AC | 28 ms | 6136 KB |
02-11.txt | AC | 28 ms | 6136 KB |
02-12.txt | AC | 29 ms | 6144 KB |
02-13.txt | AC | 29 ms | 6144 KB |
sample-01.txt | AC | 2 ms | 256 KB |
sample-02.txt | AC | 2 ms | 256 KB |