Submission #396711

#TimeUsernameProblemLanguageResultExecution timeMemory
396711leinad2Jakarta Skyscrapers (APIO15_skyscraper)C++17
57 / 100
756 ms68016 KiB
#include<bits/stdc++.h> using namespace std; int n, m, i, j, k, A[30010], a, b, w, s, e, B[30010][2]; vector<pair<int, int> >adj[30010]; map<int, vector<int> >mp[30010]; map<int, vector<int> >::iterator it; priority_queue<pair<int, int>, vector<pair<int, int> >, greater<pair<int, int> > >pq; main() { ios_base::sync_with_stdio(!cin.tie(NULL)); for(cin>>n>>m;i++<m;) { cin>>B[i][0]>>B[i][1]; mp[B[i][1]][B[i][0]%B[i][1]].push_back(B[i][0]); } for(i=0;i++<30000;) { for(it=mp[i].begin();it!=mp[i].end();it++) { vector<int>v=it->second; for(k=0;k<v.size();k++) { a=1;if(k==0)b=0;else b=v[k-1]; for(j=v[k]-i;j>=b;j-=i,a++) { adj[v[k]].push_back({j, a}); } a=1;if(k+1==v.size())b=n-1;else b=v[k+1]; for(j=v[k]+i;j<=b;j+=i,a++) { adj[v[k]].push_back({j, a}); } } } } s=B[1][0];e=B[2][0]; for(i=0;i<n;i++)A[i]=1e9; pq.push({0, s}); while(pq.size()) { pair<int, int>p=pq.top();pq.pop(); a=p.second;b=p.first; if(A[a]<1e9)continue; A[a]=b; for(i=0;i<adj[a].size();i++) { pq.push({A[a]+adj[a][i].second, adj[a][i].first}); } } if(A[e]==1e9)A[e]=-1;cout<<A[e]; }

Compilation message (stderr)

skyscraper.cpp:8:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    8 | main()
      |      ^
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:21:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |             for(k=0;k<v.size();k++)
      |                     ~^~~~~~~~~
skyscraper.cpp:28:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |                 a=1;if(k+1==v.size())b=n-1;else b=v[k+1];
      |                        ~~~^~~~~~~~~~
skyscraper.cpp:45:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |         for(i=0;i<adj[a].size();i++)
      |                 ~^~~~~~~~~~~~~~
skyscraper.cpp:50:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   50 |     if(A[e]==1e9)A[e]=-1;cout<<A[e];
      |     ^~
skyscraper.cpp:50:26: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   50 |     if(A[e]==1e9)A[e]=-1;cout<<A[e];
      |                          ^~~~
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