View Compilation Error

0_0_37665423_5352.cpp: In function 'void solve()':
0_0_37665423_5352.cpp:21:8: error: '__gnu_cxx::__alloc_traits<std::allocator<std::pair<long long int, std::pair<int, int> > > >::value_type' has no member named 'clear'
   v[i].clear();
        ^