Submission #564694

#TimeUsernameProblemLanguageResultExecution timeMemory
564694MrDebooBuilding Skyscrapers (CEOI19_skyscrapers)C++17
0 / 100
288 ms12768 KiB
#include <bits/stdc++.h> #include <ext/pb_ds/assoc_container.hpp> #include <ext/pb_ds/tree_policy.hpp> #define int long long #define endl '\n' using namespace std; using namespace __gnu_pbds; using ordered_set = tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update>; signed main(){ ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0); int n,t; cin>>n>>t; pair<int,int>pr[n]; for(auto &i:pr)cin>>i.first>>i.second; pair<int,int>por[n]; for(int i=0;i<n;i++)por[i]=pr[i]; sort(pr,pr+n); map<pair<int,int>,bool>vis; priority_queue<pair<int,pair<int,int>>,vector<pair<int,pair<int,int>>>,greater<pair<int,pair<int,int>>>>pq; int mn=1000000000000000000ll,k=0; pq.push({0,pr[k]}); deque<pair<int,int>>g; int x[]={-1,-1,-1,0,0,1,1,1}; int y[]={-1,1,0,1,-1,-1,1,0}; int cnt=0; while(pq.size()){ pair<int,int>p=pq.top().second; pq.pop(); // cout<<'f'<<p.first<<' '<<p.second<<endl; if(vis[p])continue; bool bl=0; for(int i=0;i<8;i++){ pair<int,int>pp=make_pair(p.first+x[i],p.second+y[i]); if(vis[pp])bl=1; } if(!bl)cnt++; assert(cnt<=1); vis[p]=1; g.push_back(p); for(int i=0;i<8;i++){ pair<int,int>pp=make_pair(p.first+x[i],p.second+y[i]); int k=lower_bound(pr,pr+n,pp)-pr; if(k!=n&&pr[k]==pp&&!vis[pp]){ // cout<<'g'<<pp.first<<' '<<pp.second<<endl; pq.push({abs(pp.first-pr[0].first)+abs(pp.second-pr[0].second),pp}); } } } if(g.size()!=n){cout<<"NO";} else{ cout<<"YES\n"; map<pair<int,int>,int>mp; for(int i=0;i<n;i++){ mp[g[i]]=i+1; } for(int i=0;i<n;i++)cout<<mp[por[i]]<<endl; } }

Compilation message (stderr)

skyscrapers.cpp: In function 'int main()':
skyscrapers.cpp:49:16: warning: comparison of integer expressions of different signedness: 'std::deque<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   49 |     if(g.size()!=n){cout<<"NO";}
      |        ~~~~~~~~^~~
skyscrapers.cpp:20:9: warning: unused variable 'mn' [-Wunused-variable]
   20 |     int mn=1000000000000000000ll,k=0;
      |         ^~
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