Submission #1604596
Source Code Expand
#include<bits/stdc++.h> #define rep(i,n) for(int i=0; i<n;i++) using ll = long long; #define int ll using namespace std; using pii = pair<int,int>; using piii = pair<pair<int,int>,int>; ll INF =LLONG_MAX/10; signed main(){ int n,m; cin>>n>>m; vector<piii>edge; rep(i,m){ int a,b,c; cin>>a>>b>>c; edge.push_back(piii(pii(--a,--b),c)); } bool update=false; vector<int>d(n,-INF); vector<bool>visit(n,false); visit[0]=true; d[0]=0; bool unrated=false; int v=0; while(true){ v++; update=false; rep(i,edge.size()){ piii e=edge[i]; int to=e.first.second; int from=e.first.first; int cost=e.second; if(d[to]==INF||d[from]==INF)continue; if(d[to]<d[from]+cost){ if(v>n&&to==n-1)unrated=true; d[to]=d[from]+cost; update=true; } } if(!update)break; if(v>2*(n-1)&&unrated){return puts("inf")*0;} if(v>2*(n-1))break; } cout<<d[--n]<<endl; }
Submission Info
Submission Time | |
---|---|
Task | D - Score Attack |
User | yebityon |
Language | C++14 (GCC 5.4.1) |
Score | 400 |
Code Size | 1129 Byte |
Status | AC |
Exec Time | 17 ms |
Memory | 384 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 400 / 400 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | sample_01.txt, sample_02.txt, sample_03.txt |
All | sample_01.txt, sample_02.txt, sample_03.txt, subtask_1_1.txt, subtask_1_10.txt, subtask_1_11.txt, subtask_1_12.txt, subtask_1_13.txt, subtask_1_14.txt, subtask_1_15.txt, subtask_1_16.txt, subtask_1_17.txt, subtask_1_18.txt, subtask_1_19.txt, subtask_1_2.txt, subtask_1_20.txt, subtask_1_21.txt, subtask_1_22.txt, subtask_1_23.txt, subtask_1_24.txt, subtask_1_25.txt, subtask_1_26.txt, subtask_1_27.txt, subtask_1_3.txt, subtask_1_4.txt, subtask_1_5.txt, subtask_1_6.txt, subtask_1_7.txt, subtask_1_8.txt, subtask_1_9.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
sample_01.txt | AC | 1 ms | 256 KB |
sample_02.txt | AC | 1 ms | 256 KB |
sample_03.txt | AC | 1 ms | 256 KB |
subtask_1_1.txt | AC | 1 ms | 256 KB |
subtask_1_10.txt | AC | 1 ms | 256 KB |
subtask_1_11.txt | AC | 2 ms | 256 KB |
subtask_1_12.txt | AC | 8 ms | 384 KB |
subtask_1_13.txt | AC | 1 ms | 256 KB |
subtask_1_14.txt | AC | 7 ms | 256 KB |
subtask_1_15.txt | AC | 17 ms | 384 KB |
subtask_1_16.txt | AC | 1 ms | 256 KB |
subtask_1_17.txt | AC | 1 ms | 256 KB |
subtask_1_18.txt | AC | 2 ms | 384 KB |
subtask_1_19.txt | AC | 2 ms | 384 KB |
subtask_1_2.txt | AC | 2 ms | 256 KB |
subtask_1_20.txt | AC | 1 ms | 256 KB |
subtask_1_21.txt | AC | 2 ms | 256 KB |
subtask_1_22.txt | AC | 3 ms | 384 KB |
subtask_1_23.txt | AC | 1 ms | 256 KB |
subtask_1_24.txt | AC | 2 ms | 384 KB |
subtask_1_25.txt | AC | 3 ms | 256 KB |
subtask_1_26.txt | AC | 2 ms | 256 KB |
subtask_1_27.txt | AC | 6 ms | 256 KB |
subtask_1_3.txt | AC | 2 ms | 256 KB |
subtask_1_4.txt | AC | 2 ms | 256 KB |
subtask_1_5.txt | AC | 3 ms | 256 KB |
subtask_1_6.txt | AC | 6 ms | 256 KB |
subtask_1_7.txt | AC | 2 ms | 256 KB |
subtask_1_8.txt | AC | 2 ms | 256 KB |
subtask_1_9.txt | AC | 1 ms | 256 KB |