제출 #1092997

#제출 시각아이디문제언어결과실행 시간메모리
1092997PieArmyRobot (JOI21_ho_t4)C++17
0 / 100
40 ms24932 KiB
typedef long long ll; ll pie(ll army){return (1ll<<army);} #include <bits/stdc++.h> #define fr first #define sc second #define pb push_back #define endl '\n' #define mid ((left+right)>>1) const ll inf=2000000000000000005; const int sonsuz=2000000005; using namespace std; ll fpow(ll x,ll y,ll m=0){if(y<0){cout<<"powError";return -1;}if(m)x%=m;ll res=1;while(y>0){if(y&1)res*=x;x*=x;if(m){x%=m;res%=m;}y>>=1;}return res;} struct adj{ int x,c,idx; ll p; adj(int X,int C,int P,int IDX){ x=X; c=C; p=P; idx=IDX; } }; int n,m; int C[200001],P[200001]; vector<adj>komsu[100001]; ll vis[300001]; void code(){ cin>>n>>m; for(int i=1;i<=m;i++){ int x,y; cin>>x>>y>>C[i]>>P[i]; adj a(y,C[i],P[i],i); komsu[x].pb(adj(y,C[i],P[i],i)); komsu[y].pb(adj(x,C[i],P[i],i)); } for(ll &x:vis) x=-1; priority_queue<pair<ll,pair<int,int>>>pq; pq.push({0,{1,0}}); ll ans=inf; while(pq.size()){ ll cos=-pq.top().fr; int pos=pq.top().sc.fr,idx=pq.top().sc.sc; pq.pop(); if(idx){ if(vis[n+idx]!=-1)assert(0); vis[n+idx]=cos; } else{ if(vis[pos]!=-1)continue; vis[pos]=cos; } if(pos==n)ans=min(ans,cos); map<int,ll>mp; for(adj &x:komsu[pos]){ if(idx!=x.idx)mp[x.c]+=x.p; } for(adj &x:komsu[pos]){ if(idx==x.idx)continue; if(vis[x.x]==-1){ pq.push({-(cos+mp[x.c]-x.p),{x.x,0}}); } pq.push({-(cos+x.p),{x.x,x.idx}}); } } if(ans==inf)cout<<-1; else cout<<ans; } int main(){ ios_base::sync_with_stdio(false);cin.tie(NULL); bool usaco=0;if(usaco){freopen(".in","r",stdin);freopen(".out","w",stdout);} int t=1; if(!t)cin>>t; while(t--){code();cout<<endl;} return 0; }

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:75:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   75 |  bool usaco=0;if(usaco){freopen(".in","r",stdin);freopen(".out","w",stdout);}
      |                         ~~~~~~~^~~~~~~~~~~~~~~~~
Main.cpp:75:57: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   75 |  bool usaco=0;if(usaco){freopen(".in","r",stdin);freopen(".out","w",stdout);}
      |                                                  ~~~~~~~^~~~~~~~~~~~~~~~~~~
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...