Submission #2543217
Source Code Expand
#include <cstdio> #include <vector> #include <algorithm> #include <cstring> using namespace std; const int MAX=100001; typedef pair<int,int> pii; vector<pii> edge[MAX]; bool visited[100001]; int dist[100001]; bool dfs(int v) { visited[v]=true; for(int j=0;j<edge[v].size();j++) { int next=edge[v][j].first; int cost=edge[v][j].second; if(!visited[next]) { dist[next]=dist[v]+cost; if(!dfs(next)) return false; } else { if(dist[next]!=dist[v]+cost) return false; } } return true; } int main() { int n,m; scanf("%d %d",&n,&m); if(m==0) { printf("Yes"); return 0; } while(m--) { int l,r,val; scanf("%d %d %d",&l,&r,&val); edge[l].push_back(make_pair(r,val)); edge[r].push_back(make_pair(l,-val)); } memset(visited,false,sizeof(visited)); for(int i=1;i<=n;i++) { if(!visited[i]) { dist[i]=0; if(!dfs(i)) { printf("No"); return 0; } } } printf("Yes"); return 0; }
Submission Info
Submission Time | |
---|---|
Task | D - People on a Line |
User | AboveTheHorizon |
Language | C++14 (GCC 5.4.1) |
Score | 400 |
Code Size | 1297 Byte |
Status | AC |
Exec Time | 97 ms |
Memory | 12032 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:42:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&n,&m); ^ ./Main.cpp:51:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&l,&r,&val); ^
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 400 / 400 | ||||
Status |
|
|
Set Name | Test Cases |
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Sample | sample01.txt, sample02.txt, sample03.txt, sample04.txt, sample05.txt |
All | 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, 25.txt, 26.txt, 27.txt, 28.txt, 29.txt, 30.txt, 31.txt, 32.txt, 33.txt, 34.txt, 35.txt, 36.txt, 37.txt, 38.txt, 39.txt, 40.txt, 41.txt, 42.txt, sample01.txt, sample02.txt, sample03.txt, sample04.txt, sample05.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
01.txt | AC | 84 ms | 8436 KB |
02.txt | AC | 84 ms | 10100 KB |
03.txt | AC | 86 ms | 9344 KB |
04.txt | AC | 97 ms | 12032 KB |
05.txt | AC | 70 ms | 8576 KB |
06.txt | AC | 68 ms | 9088 KB |
07.txt | AC | 72 ms | 8448 KB |
08.txt | AC | 64 ms | 8704 KB |
09.txt | AC | 60 ms | 8320 KB |
10.txt | AC | 55 ms | 8064 KB |
11.txt | AC | 53 ms | 8192 KB |
12.txt | AC | 65 ms | 7808 KB |
13.txt | AC | 75 ms | 8832 KB |
14.txt | AC | 60 ms | 8448 KB |
15.txt | AC | 60 ms | 7936 KB |
16.txt | AC | 58 ms | 8576 KB |
17.txt | AC | 85 ms | 11392 KB |
18.txt | AC | 77 ms | 8576 KB |
19.txt | AC | 64 ms | 8704 KB |
20.txt | AC | 64 ms | 8704 KB |
21.txt | AC | 74 ms | 9344 KB |
22.txt | AC | 57 ms | 8320 KB |
23.txt | AC | 80 ms | 9728 KB |
24.txt | AC | 59 ms | 8320 KB |
25.txt | AC | 86 ms | 11264 KB |
26.txt | AC | 83 ms | 11392 KB |
27.txt | AC | 51 ms | 9856 KB |
28.txt | AC | 64 ms | 9216 KB |
29.txt | AC | 51 ms | 10752 KB |
30.txt | AC | 60 ms | 8832 KB |
31.txt | AC | 50 ms | 8960 KB |
32.txt | AC | 61 ms | 8960 KB |
33.txt | AC | 89 ms | 11264 KB |
34.txt | AC | 77 ms | 9984 KB |
35.txt | AC | 50 ms | 9600 KB |
36.txt | AC | 57 ms | 8064 KB |
37.txt | AC | 49 ms | 9984 KB |
38.txt | AC | 57 ms | 8704 KB |
39.txt | AC | 43 ms | 6656 KB |
40.txt | AC | 54 ms | 8320 KB |
41.txt | AC | 2 ms | 2560 KB |
42.txt | AC | 26 ms | 5248 KB |
sample01.txt | AC | 2 ms | 2688 KB |
sample02.txt | AC | 2 ms | 2688 KB |
sample03.txt | AC | 2 ms | 2688 KB |
sample04.txt | AC | 2 ms | 2688 KB |
sample05.txt | AC | 2 ms | 2560 KB |