제출 #896411

#제출 시각아이디문제언어결과실행 시간메모리
896411Abdalaziz_AlshamiEvent Hopping (BOI22_events)C++17
컴파일 에러
0 ms0 KiB
#include<iostream>#include<set>#include<map>#include<utility>#define st first#define ed second//#define int int64_t#define endl '\n'using namespace std;signed main(){ ios::sync_with_stdio(0); cin.tie(0); cout.tie(0); int n,q; cin>>n>>q; pair<int,int>a[n+1]; map<int,int>pres; for(int i=1;i<=n;i++) { cin>>a[i].st>>a[i].ed; pres[a[i].st]; pres[a[i].ed]; } int d=1; for(auto &e:pres) e.ed=d,d++; set<int> m[d+10]; for(int i=1; i<=n;i++) { a[i].st=pres[a[i].st]; a[i].ed=pres[a[i].ed]; m[a[i].st].insert(-a[i].ed); } while(q--) { int u,v; cin>>u>>v; if(u==v) { cout<<0<<endl; continue;} int i=a[u].st,mx=a[u].ed,g1=a[v].st,g2=a[v].ed,p=-1,ans=0; bool f=false; while(i<=mx) { auto it=m[i].lower_bound(-g2); if(it!=m[i].end()) p=max(p,-*it); if(i==mx){ mx=p; ans++; if(mx<=g2&&i>=g1) { f=true; break;} } i++; } if(f) cout<<ans<<endl; else cout<<"impossible"<<endl; }}

컴파일 시 표준 에러 (stderr) 메시지

events.cpp:1:19: warning: extra tokens at end of #include directive
    1 | #include<iostream>#include<set>#include<map>#include<utility>#define st first#define ed second//#define int int64_t#define endl '\n'using namespace std;signed main(){ ios::sync_with_stdio(0); cin.tie(0); cout.tie(0); int n,q; cin>>n>>q; pair<int,int>a[n+1]; map<int,int>pres; for(int i=1;i<=n;i++) {  cin>>a[i].st>>a[i].ed;  pres[a[i].st]; pres[a[i].ed]; } int d=1; for(auto &e:pres) e.ed=d,d++; set<int> m[d+10]; for(int i=1; i<=n;i++)  {  a[i].st=pres[a[i].st];  a[i].ed=pres[a[i].ed];  m[a[i].st].insert(-a[i].ed); } while(q--) {  int u,v; cin>>u>>v;   if(u==v) {  cout<<0<<endl; continue;}  int i=a[u].st,mx=a[u].ed,g1=a[v].st,g2=a[v].ed,p=-1,ans=0;  bool f=false;  while(i<=mx)  {   auto it=m[i].lower_bound(-g2);   if(it!=m[i].end()) p=max(p,-*it);   if(i==mx){     mx=p; ans++;     if(mx<=g2&&i>=g1) { f=true; break;}   }   i++;  }  if(f) cout<<ans<<endl;  else  cout<<"impossible"<<endl; }}
      |                   ^
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../x86_64-linux-gnu/crt1.o: in function `_start':
(.text+0x24): undefined reference to `main'
collect2: error: ld returned 1 exit status