제출 #366151

#제출 시각아이디문제언어결과실행 시간메모리
366151Ahmad_HasanTable Tennis (info1cup20_tabletennis)C++17
49 / 100
3115 ms1048580 KiB
#include <bits/stdc++.h> #define int long long /** |||||||||| ||||| ||||| |||||||||| ||||||||||||| ||||| ||||| ||||| |||| |||||| ||||| ||||| ||||| ||||||||||||||||| ||||||||||||||| |||||||||| ||||||||||||||||||| ||||||||||||||| ||||| ||||| ||||| ||||| ||||| ||||| ||||| ||||| ||||| ||||| |||||||||| AHMED;HASSAN;SAEED; */ using namespace std; unordered_map<int,int>mp; vector<int>v; vector<vector<pair<int,pair<int,int> > > >dp; int n,k; int slv(int l,int r){ ///cout<<l<<' '<<r<<'\n'; if(dp[l][r].first!=-1) return dp[l][r].first; int ret=0; for(int i=l+1;i<r&&(i-l)<=k+5;i++){ if(mp[v[r]-(v[i]-v[l])]>i+1){ int ret2=1+slv(i,mp[v[r]-(v[i]-v[l])]-1); ///cout<<'#'<<i<<' '<<mp[v[r]-(v[i]-v[l])]-1<<'\n'; if(ret2>ret){ ret=ret2; dp[l][r].second={i,mp[v[r]-(v[i]-v[l])]-1}; } } } 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; v=vector<int>(n); for(int i=0;i<n;i++){ cin>>v[i]; mp[v[i]]=i+1; } int ans=0; int l,r; dp=vector<vector<pair<int,pair<int,int>> > >(n+5,vector<pair<int,pair<int,int>> >(n+5,{-1,{-1,-1}})); 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:72:33: warning: 'r' may be used uninitialized in this function [-Wmaybe-uninitialized]
   72 |         v2[tol]=v[l],v2[tor]=v[r];
      |                                 ^
tabletennis.cpp:72:20: warning: 'l' may be used uninitialized in this function [-Wmaybe-uninitialized]
   72 |         v2[tol]=v[l],v2[tor]=v[r];
      |                    ^
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