Submission #123603

#	Time	Username	Problem	Language	Result	Execution time	Memory
123603		baqargam	Roller Coaster Railroad (IOI16_railroad)	C++14	Compilation error	0 ms	0 KiB

railroad

#include "bits/stdc++.h"
#include "railroad.h"

using namespace std;

long long j,l,d[400005],g[100],bal;
vector<pair<int,int> >v;

long long plan_roller_coaster(vector<int> s, vector<int> t) {
    int n = (int) s.size();
    for(int i=1;i<=n;i++){
        v.push_back({s[i-1],i});
        v.push_back({t[i-1],-i});
    }
    v.push_back({1000000000,-i});
    v.push_back({1,i});
    sort(v.begin(),v.end());
    for(int i=0;i<v.size();i++){
        int id=v[i].second;
        int val=v[i].first;
        if(id<0)
        {
            id=-id;
            bal--;
            d[id]=1;
        }
        else
        {
            bal++;
            d[id]=1;
        }
        if(i<v.size()-1 && v[i].first!=v[i+1].first)
        if(bal>0) return 0;
    }
    return 1;
}

Compilation message (stderr)

railroad.cpp: In function 'long long int plan_roller_coaster(std::vector<int>, std::vector<int>)':
railroad.cpp:15:30: error: 'i' was not declared in this scope
     v.push_back({1000000000,-i});
                              ^
railroad.cpp:15:32: error: no matching function for call to 'std::vector<std::pair<int, int> >::push_back(<brace-enclosed initializer list>)'
     v.push_back({1000000000,-i});
                                ^
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 railroad.cpp:1:
/usr/include/c++/7/bits/stl_vector.h:939:7: note: candidate: void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<int, int>]
       push_back(const value_type& __x)
       ^~~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:939:7: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'const value_type& {aka const std::pair<int, int>&}'
/usr/include/c++/7/bits/stl_vector.h:953:7: note: candidate: void std::vector<_Tp, _Alloc>::push_back(std::vector<_Tp, _Alloc>::value_type&&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<int, int>]
       push_back(value_type&& __x)
       ^~~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:953:7: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'std::vector<std::pair<int, int> >::value_type&& {aka std::pair<int, int>&&}'
railroad.cpp:16:22: error: no matching function for call to 'std::vector<std::pair<int, int> >::push_back(<brace-enclosed initializer list>)'
     v.push_back({1,i});
                      ^
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 railroad.cpp:1:
/usr/include/c++/7/bits/stl_vector.h:939:7: note: candidate: void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<int, int>]
       push_back(const value_type& __x)
       ^~~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:939:7: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'const value_type& {aka const std::pair<int, int>&}'
/usr/include/c++/7/bits/stl_vector.h:953:7: note: candidate: void std::vector<_Tp, _Alloc>::push_back(std::vector<_Tp, _Alloc>::value_type&&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<int, int>]
       push_back(value_type&& __x)
       ^~~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:953:7: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'std::vector<std::pair<int, int> >::value_type&& {aka std::pair<int, int>&&}'
railroad.cpp:18:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<v.size();i++){
                 ~^~~~~~~~~
railroad.cpp:32:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if(i<v.size()-1 && v[i].first!=v[i+1].first)
            ~^~~~~~~~~~~
railroad.cpp:20:13: warning: unused variable 'val' [-Wunused-variable]
         int val=v[i].first;
             ^~~