Submission #145105

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
145105	2019-08-18 19:08:42	emilem	Zagonetka (COI18_zagonetka)	C++14	Compilation error	0 ms	0 KiB

zagonetka

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#include <algorithm>
#include <iostream>
#include <vector>
#include <set>
using namespace std;
int n;
vector<bool> used;
vector<int> p;
vector< vector<int> > nei;
template<typename T>
ostream& operator<<(ostream& ostr, const vector<T>& a)
{
  for (int i = 1; i < a.size(); ++i)
    ostr << a[i] << ' ';
  return ostr;
}
void Dfs(int v, vector<int>& a)
{
  used[v] = true;
  for (int i = 0; i < nei[v].size(); ++i)
  {
    int to = nei[v][i];
    if (used[to])
      continue;
    Dfs(to, a);
  }
  a.push_back(v);
}
 
 
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Compilation message (stderr)

zagonetka.cpp: In function 'void Dfs(int, std::vector<int>&)':
zagonetka.cpp:22:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < nei[v].size(); ++i)
                  ~~^~~~~~~~~~~~~~~
zagonetka.cpp: In function 'bool Possible(int)':
zagonetka.cpp:41:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < a.size(); ++i)
                  ~~^~~~~~~~~~
zagonetka.cpp: In function 'int main()':
zagonetka.cpp:79:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int i = 0; i < nei[v].size(); ++i)
                    ~~^~~~~~~~~~~~~~~
zagonetka.cpp:82:9: error: 'ans' was not declared in this scope
     if (ans[v] >= ans[to])
         ^~~
zagonetka.cpp:82:9: note: suggested alternative: 'abs'
     if (ans[v] >= ans[to])
         ^~~
         abs
zagonetka.cpp:89:8: error: 'ans' was not declared in this scope
    r = ans;
        ^~~
zagonetka.cpp:89:8: note: suggested alternative: 'abs'
    r = ans;
        ^~~
        abs
zagonetka.cpp:93:27: error: 'ans' was not declared in this scope
  } while(next_permutation(ans.begin(), ans.end());
                           ^~~
zagonetka.cpp:93:27: note: suggested alternative: 'abs'
  } while(next_permutation(ans.begin(), ans.end());
                           ^~~
                           abs
zagonetka.cpp:93:50: error: expected ')' before ';' token
  } while(next_permutation(ans.begin(), ans.end());
                                                  ^
zagonetka.cpp: In instantiation of 'std::ostream& operator<<(std::ostream&, const std::vector<T>&) [with T = int; std::ostream = std::basic_ostream<char>]':
zagonetka.cpp:43:10:   required from here
zagonetka.cpp:15:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 1; i < a.size(); ++i)