# include <bits/stdc++.h> # define ll long long # define fi first # define se second # define pb push_back # define pf push_front # define For(i, a, b) for( int i = a; i < b; i++ ) # define in insert # define all(a) a.begin(),a.end() # define pi pair < int, int > # define DEBUG # define readfile(file) freopen ( (file + ".in").c_str(), "r", stdin) # define writefile(file) freopen ( (file + ".out").c_str(), "w", stdout) # define speed ios_base::sync_with_stdio(false);cin.tie(NULL) # define LARGE (1e7) using namespace std; void Set_File( string file ){readfile(file);writefile(file);} int n, m; queue < int > line; int car; ll money; int main(){ /// Author: _Dilshod_ speed; cin >> n >> m; vector < pi > parking(n); vector < pi > cars(m); For ( i, 0, n ){ cin >> parking[i].fi; } For ( i, 0, m ){ cin >> cars[i].fi; } For ( i, 0, 2 * m ){ cin >> car; if ( car < 0 ){ car *= -1; parking[cars[car - 1].se].se = 0; cars[car - 1].se = -1; } else { line.push(car); } For ( j, 0, n ){ if ( !line.size() ) { break; } if ( !parking[j].se ) { parking[j].se = 1; cars[line.front() - 1].se = j; money += parking[j].fi * cars[line.front() - 1].fi; line.pop(); } } } cout << money; }

garage.cpp: In function 'void Set_File(std::__cxx11::string)':
garage.cpp:12:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
 # define readfile(file) freopen ( (file + ".in").c_str(), "r", stdin)
                         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
garage.cpp:18:30: note: in expansion of macro 'readfile'
 void Set_File( string file ){readfile(file);writefile(file);}
                              ^~~~~~~~
garage.cpp:13:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
 # define writefile(file) freopen ( (file + ".out").c_str(), "w", stdout)
                          ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
garage.cpp:18:45: note: in expansion of macro 'writefile'
 void Set_File( string file ){readfile(file);writefile(file);}
                                             ^~~~~~~~~