제출 #244648

#제출 시각아이디문제언어결과실행 시간메모리
244648uacoder123Jakarta Skyscrapers (APIO15_skyscraper)C++14
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> using namespace std; #define F first #define S second #define FOR(i,a,b) for (auto i = (a); i <= (b); ++i) #define NFOR(i,a,b) for(auto i = (a); i >= (b); --i) #define all(x) (x).begin(), (x).end() #define sz(x) int(x.size()) #define mp(i,a) make_pair(i,a) #define pb(a) push_back(a) #define bit(x,b) (x&(1LL<<b)) typedef int lli; typedef pair <lli,lli> ii; typedef pair <lli,ii> iii; typedef vector <lli> vi; vector<ii> al[6*1000000]; lli dis[6000000]; set<ii> s; lli dij(lli so,lli t) { for(lli i=0;i<6000000;++i) dis[i]=1000000000; s.insert(mp(0,so)); dis[so]=0; while(s.size()!=0) { ii v=(*s.begin()); s.erase(s.begin()); dis[v.S]=v.F; for(lli i=0;i<al[v.S].size();++i) { if(al[v.S][i].S+v.F<dis[al[v.S][i].F]) { s.erase(mp(dis[al[v.S][i].F],al[v.S][i].F)); dis[al[v.S][i].F]=al[v.S][i].S+v.F; s.insert(mp(dis[al[v.S][i].F],al[v.S][i].F)); } } } if(dis[t]==1000000000) return(-1); return(dis[t]); } int main() { ios_base::sync_with_stdio(false); cin.tie(NULL); lli test=1; for(;test>0;--test) { lli n,m,rn; cin>>n>>m; rn=sqrt(n)+1; ii dg[m]; for(lli i=1;i<rn;++i) { for(lli j=0;j<n;++j) { if(j+i<n) { al[i*n+j].pb(mp(i*n+j+i,1)); al[i*n+j+i].pb(mp(i*n+j,1)); } if(j+i<n) al[i*n+j].pb(mp(rn*n+j+i,1)); if(j-i>=0) al[i*n+j].pb(mp(rn*n+j-i,1)); } } for(lli i=0;i<m;++i) { lli f,se; cin>>f>>se; dg[i]=mp(f,se); if(s<rn) { al[rn*n+f].pb(mp((se)*n+f,0)); al[se*n+f].pb(mp(rn*n+f,0)); } if(se>=rn) { lli p=f+se; while(p<n) { al[rn*n+f].pb(mp(rn*n+p,(p-f)/se)); p+=se; } p=f-se; while(p>=0) { al[rn*n+f].pb(mp(rn*n+p,(f-p)/se)); p-=se; } } } cout<<dij(dg[0].S*n+dg[0].F,dg[1].S*n+dg[1].F)<<endl; } return(0); }

컴파일 시 표준 에러 (stderr) 메시지

skyscraper.cpp: In function 'lli dij(lli, lli)':
skyscraper.cpp:31:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(lli i=0;i<al[v.S].size();++i)
                 ~^~~~~~~~~~~~~~~
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:76:11: error: no match for 'operator<' (operand types are 'std::set<std::pair<int, int> >' and 'lli {aka int}')
       if(s<rn)
          ~^~~
In file included from /usr/include/c++/7/regex:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:110,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/regex.h:962:5: note: candidate: template<class _BiIter> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, const std::__cxx11::sub_match<_BiIter>&)
     operator<(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
     ^~~~~~~~
/usr/include/c++/7/bits/regex.h:962:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   'std::set<std::pair<int, int> >' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/regex:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:110,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/regex.h:1041:5: note: candidate: template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator<(std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&, const std::__cxx11::sub_match<_BiIter>&)
     operator<(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
     ^~~~~~~~
/usr/include/c++/7/bits/regex.h:1041:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   'std::set<std::pair<int, int> >' is not derived from 'std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/regex:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:110,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/regex.h:1121:5: note: candidate: template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&)
     operator<(const sub_match<_Bi_iter>& __lhs,
     ^~~~~~~~
/usr/include/c++/7/bits/regex.h:1121:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   'std::set<std::pair<int, int> >' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/regex:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:110,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/regex.h:1198:5: note: candidate: template<class _Bi_iter> bool std::__cxx11::operator<(const typename std::iterator_traits<_Iter>::value_type*, const std::__cxx11::sub_match<_BiIter>&)
     operator<(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
     ^~~~~~~~
/usr/include/c++/7/bits/regex.h:1198:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'lli {aka int}'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/regex:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:110,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/regex.h:1272:5: note: candidate: template<class _Bi_iter> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)
     operator<(const sub_match<_Bi_iter>& __lhs,
     ^~~~~~~~
/usr/include/c++/7/bits/regex.h:1272:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   'std::set<std::pair<int, int> >' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/regex:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:110,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/regex.h:1349:5: note: candidate: template<class _Bi_iter> bool std::__cxx11::operator<(const typename std::iterator_traits<_Iter>::value_type&, const std::__cxx11::sub_match<_BiIter>&)
     operator<(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
     ^~~~~~~~
/usr/include/c++/7/bits/regex.h:1349:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'lli {aka int}'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/regex:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:110,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/regex.h:1429:5: note: candidate: template<class _Bi_iter> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)
     operator<(const sub_match<_Bi_iter>& __lhs,
     ^~~~~~~~
/usr/include/c++/7/bits/regex.h:1429:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   'std::set<std::pair<int, int> >' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/future:39:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:105,
                 from skyscraper.cpp:1:
/usr/include/c++/7/thread:281:3: note: candidate: bool std::operator<(std::thread::id, std::thread::id)
   operator<(thread::id __x, thread::id __y) noexcept
   ^~~~~~~~
/usr/include/c++/7/thread:281:3: note:   no known conversion for argument 1 from 'std::set<std::pair<int, int> >' to 'std::thread::id'
In file included from /usr/include/c++/7/forward_list:38:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:104,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/forward_list.h:1391:5: note: candidate: template<class _Tp, class _Alloc> bool std::operator<(const std::forward_list<_Tp, _Alloc>&, const std::forward_list<_Tp, _Alloc>&)
     operator<(const forward_list<_Tp, _Alloc>& __lx,
     ^~~~~~~~
/usr/include/c++/7/bits/forward_list.h:1391:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   'std::set<std::pair<int, int> >' is not derived from 'const std::forward_list<_Tp, _Alloc>'
       if(s<rn)
            ^~
In file included from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:95:0,
                 from skyscraper.cpp:1:
/usr/include/c++/7/valarray:1186:1: note: candidate: template<class _Tp> std::_Expr<std::_BinClos<std::__less, std::_Constant, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__less, _Tp>::result_type> std::operator<(const _Tp&, const std::valarray<_Tp>&)
 _DEFINE_BINARY_OPERATOR(<, __less)
 ^
/usr/include/c++/7/valarray:1186:1: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   mismatched types 'const std::valarray<_Tp>' and 'lli {aka int}'
       if(s<rn)
            ^~
In file included from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:95:0,
                 from skyscraper.cpp:1:
/usr/include/c++/7/valarray:1186:1: note: candidate: template<class _Tp> std::_Expr<std::_BinClos<std::__less, std::_ValArray, std::_Constant, _Tp, _Tp>, typename std::__fun<std::__less, _Tp>::result_type> std::operator<(const std::valarray<_Tp>&, const _Tp&)
 _DEFINE_BINARY_OPERATOR(<, __less)
 ^
/usr/include/c++/7/valarray:1186:1: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   'std::set<std::pair<int, int> >' is not derived from 'const std::valarray<_Tp>'
       if(s<rn)
            ^~
In file included from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:95:0,
                 from skyscraper.cpp:1:
/usr/include/c++/7/valarray:1186:1: note: candidate: template<class _Tp> std::_Expr<std::_BinClos<std::__less, std::_ValArray, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__less, _Tp>::result_type> std::operator<(const std::valarray<_Tp>&, const std::valarray<_Tp>&)
 _DEFINE_BINARY_OPERATOR(<, __less)
 ^
/usr/include/c++/7/valarray:1186:1: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   'std::set<std::pair<int, int> >' is not derived from 'const std::valarray<_Tp>'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/valarray:592:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:95,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/valarray_after.h:416:5: note: candidate: template<class _Dom> std::_Expr<std::_BinClos<std::__less, std::_ValArray, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__less, typename _Dom1::value_type>::result_type> std::operator<(const std::valarray<typename _Dom::value_type>&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(<, __less)
     ^
/usr/include/c++/7/bits/valarray_after.h:416:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'lli {aka int}'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/valarray:592:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:95,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/valarray_after.h:416:5: note: candidate: template<class _Dom> std::_Expr<std::_BinClos<std::__less, std::_Expr, std::_ValArray, _Dom, typename _Dom::value_type>, typename std::__fun<std::__less, typename _Dom1::value_type>::result_type> std::operator<(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::valarray<typename _Dom::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(<, __less)
     ^
/usr/include/c++/7/bits/valarray_after.h:416:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   'std::set<std::pair<int, int> >' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/valarray:592:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:95,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/valarray_after.h:416:5: note: candidate: template<class _Dom> std::_Expr<std::_BinClos<std::__less, std::_Constant, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__less, typename _Dom1::value_type>::result_type> std::operator<(const typename _Dom::value_type&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(<, __less)
     ^
/usr/include/c++/7/bits/valarray_after.h:416:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'lli {aka int}'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/valarray:592:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:95,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/valarray_after.h:416:5: note: candidate: template<class _Dom> std::_Expr<std::_BinClos<std::__less, std::_Expr, std::_Constant, _Dom, typename _Dom::value_type>, typename std::__fun<std::__less, typename _Dom1::value_type>::result_type> std::operator<(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const typename _Dom::value_type&)
     _DEFINE_EXPR_BINARY_OPERATOR(<, __less)
     ^
/usr/include/c++/7/bits/valarray_after.h:416:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   'std::set<std::pair<int, int> >' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/valarray:592:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:95,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/valarray_after.h:416:5: note: candidate: template<class _Dom1, class _Dom2> std::_Expr<std::_BinClos<std::__less, std::_Expr, std::_Expr, _Dom1, _Dom2>, typename std::__fun<std::__less, typename _Dom1::value_type>::result_type> std::operator<(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::_Expr<_Dom2, typename _Dom2::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(<, __less)
     ^
/usr/include/c++/7/bits/valarray_after.h:416:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   'std::set<std::pair<int, int> >' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/stack:61:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:89,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/stl_stack.h:311:5: note: candidate: template<class _Tp, class _Seq> bool std::operator<(const std::stack<_Tp, _Seq>&, const std::stack<_Tp, _Seq>&)
     operator<(const stack<_Tp, _Seq>& __x, const stack<_Tp, _Seq>& __y)
     ^~~~~~~~
/usr/include/c++/7/bits/stl_stack.h:311:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   'std::set<std::pair<int, int> >' is not derived from 'const std::stack<_Tp, _Seq>'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/set:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:87,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/stl_multiset.h:913:5: note: candidate: template<class _Key, class _Compare, class _Alloc> bool std::operator<(const std::multiset<_Key, _Compare, _Alloc>&, const std::multiset<_Key, _Compare, _Alloc>&)
     operator<(const multiset<_Key, _Compare, _Alloc>& __x,
     ^~~~~~~~
/usr/include/c++/7/bits/stl_multiset.h:913:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   'std::set<std::pair<int, int> >' is not derived from 'const std::multiset<_Key, _Compare, _Alloc>'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/set:61:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:87,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/stl_set.h:930:5: note: candidate: template<class _Key, class _Compare, class _Alloc> bool std::operator<(const std::set<_Key, _Compare, _Alloc>&, const std::set<_Key, _Compare, _Alloc>&)
     operator<(const set<_Key, _Compare, _Alloc>& __x,
     ^~~~~~~~
/usr/include/c++/7/bits/stl_set.h:930:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   mismatched types 'const std::set<_Key, _Compare, _Alloc>' and 'lli {aka int}'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/queue:64:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:86,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/stl_queue.h:336:5: note: candidate: template<class _Tp, class _Seq> bool std::operator<(const std::queue<_Tp, _Seq>&, const std::queue<_Tp, _Seq>&)
     operator<(const queue<_Tp, _Seq>& __x, const queue<_Tp, _Seq>& __y)
     ^~~~~~~~
/usr/include/c++/7/bits/stl_queue.h:336:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   'std::set<std::pair<int, int> >' is not derived from 'const std::queue<_Tp, _Seq>'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/vector:64:0,
                 from /usr/include/c++/7/queue:61,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:86,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/stl_vector.h:1613:5: note: candidate: template<class _Tp, class _Alloc> bool std::operator<(const std::vector<_Tp, _Alloc>&, const std::vector<_Tp, _Alloc>&)
     operator<(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
     ^~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:1613:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   'std::set<std::pair<int, int> >' is not derived from 'const std::vector<_Tp, _Alloc>'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/memory:81:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:82,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/shared_ptr.h:416:5: note: candidate: template<class _Tp> bool std::operator<(std::nullptr_t, const std::shared_ptr<_Tp>&)
     operator<(nullptr_t, const shared_ptr<_Tp>& __a) noexcept
     ^~~~~~~~
/usr/include/c++/7/bits/shared_ptr.h:416:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   mismatched types 'const std::shared_ptr<_Tp>' and 'lli {aka int}'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/memory:81:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:82,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/shared_ptr.h:408:5: note: candidate: template<class _Tp> bool std::operator<(const std::shared_ptr<_Tp>&, std::nullptr_t)
     operator<(const shared_ptr<_Tp>& __a, nullptr_t) noexcept
     ^~~~~~~~
/usr/include/c++/7/bits/shared_ptr.h:408:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   'std::set<std::pair<int, int> >' is not derived from 'const std::shared_ptr<_Tp>'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/memory:81:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:82,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/shared_ptr.h:398:5: note: candidate: template<class _Tp, class _Up> bool std::operator<(const std::shared_ptr<_Tp>&, const std::shared_ptr<_Up>&)
     operator<(const shared_ptr<_Tp>& __a, const shared_ptr<_Up>& __b) noexcept
     ^~~~~~~~
/usr/include/c++/7/bits/shared_ptr.h:398:5: note:   template argument deduction/substitution failed:
skyscraper.cpp:76:12: note:   'std::set<std::pair<int, int> >' is not derived from 'const std::shared_ptr<_Tp>'
       if(s<rn)
            ^~
In file included from /usr/include/c++/7/bits/shared_ptr.h:52:0,
                 from /usr/include/c++/7/memory:81,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:82,
                 from skyscraper.cpp:1:
/usr/include/c++/7/bits/shared_ptr_base.h:1460:5: note: candidate: template<class _Tp, _