제출 #366172

#제출 시각아이디문제언어결과실행 시간메모리
366172Ahmad_HasanTable Tennis (info1cup20_tabletennis)C++17
78 / 100
2995 ms1048580 KiB
#include <bits/stdc++.h> #define int long long /** |||||||||| ||||| ||||| |||||||||| ||||||||||||| ||||| ||||| ||||| |||| |||||| ||||| ||||| ||||| ||||||||||||||||| ||||||||||||||| |||||||||| ||||||||||||||||||| ||||||||||||||| ||||| ||||| ||||| ||||| ||||| ||||| ||||| ||||| ||||| ||||| |||||||||| AHMED;HASSAN;SAEED; */ using namespace std; vector<pair<int,int> >vls; vector<int>v; map<int,pair<int,pair<int,int> > >dp[150000]; bool comp(pair<int,int>a,pair<int,int>b){ if(a.first==b.first) return a.second<b.second; return a.first<b.first; } int mp(int key){ vector<pair<int,int> >::iterator it=lower_bound(vls.begin(),vls.end(),make_pair(key,-1),comp); if(it==vls.end()||((it->first)!=key)) return 0; return it->second; } int n,k; int slv(int l,int r){ if(dp[l][r].first) return dp[l][r].first; int ret=1; for(int i=l+1;i<r&&(i-l)<=k+5;i++){ int mpvl=mp(v[r]-(v[i]-v[l])); if(mpvl>i+1){ int ret2=1+slv(i,mpvl-1); ///cout<<'#'<<i<<' '<<mp(v[r]-(v[i]-v[l]))-1<<'\n'; if(ret2>ret){ ret=ret2; dp[l][r].second={i,mpvl-1}; } break; } } return dp[l][r].first=ret; } int32_t main() { ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); cin>>n>>k; n+=k; vls=vector<pair<int,int> >(n*k+5); int cr=0; v=vector<int>(n); for(int i=0;i<n;i++){ cin>>v[i]; for(int j=0;j<k;j++) vls[cr++]={v[i],i+1}; } int ans=0; int l,r; for(int i=0;i<=k;i++){ for(int j=n-1;j>=n-k-1&&(i+n-1-j)<=k;j--){ int ret=slv(i,j); if(ret>ans){ ans=ret; l=i,r=j; } } } vector<int>v2(n-k); int cnt=0; int tol=0,tor=n-k-1; while(cnt<n-k){ v2[tol]=v[l],v2[tor]=v[r]; int nl=dp[l][r].second.first,nr=dp[l][r].second.second; l=nl,r=nr; cnt+=2; tol++; tor--; } for(int i=0;i<n-k;i++) cout<<v2[i]<<' '; return 0; }

컴파일 시 표준 에러 (stderr) 메시지

tabletennis.cpp: In function 'int32_t main()':
tabletennis.cpp:84:20: warning: 'l' may be used uninitialized in this function [-Wmaybe-uninitialized]
   84 |         v2[tol]=v[l],v2[tor]=v[r];
      |                    ^
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...