| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 389887 | null_awe | Tracks in the Snow (BOI13_tracks) | C++17 | Compilation error | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
int main() {
int h, w;
cin >> h >> w;
vector<vector<int>> field(h, vector<int>(w, 0)), filled(h, vector<int>(w, 0));
for (int i = 0; i < h; ++i) {
string line;
cin >> line;
for (int j = 0; j < w; ++j) field[i][j] = (line[j] == '.' ? -1 : (line[j] == 'R' ? 1 : 2));
}
int r = 0;
vector<vector<int>> next();
vector<int> first{0, 0};
next.push_back(first);
while (!next.empty()) {
queue<vector<int>> q();
for (vector<int> go : next) q.push(go);
next.clear();
while (!q.empty()) {
vector<int> square = q.front();
q.pop();
for (int a = -1; a < 2; a += 2) {
int newX = square[0] + a, newY = square[1];
if (newX < 0 || newY < 0 || newX >= h || newY >= w) continue;
if (filled[newX][newY] > 0 || field[newX][newY] < 0) continue;
vector<int> add{newX, newY};
if (field[newX][newY] == field[square[0]][square[1]]) q.push(add);
else next.push_back(add);
}
for (int a = -1; a < 2; a += 2) {
int newX = square[0], newY = square[1] + a;
if (newX < 0 || newY < 0 || newX >= h || newY >= w) continue;
if (filled[newX][newY] > 0 || field[newX][newY] < 0) continue;
vector<int> add{newX, newY};
if (field[newX][newY] == field[square[0]][square[1]]) q.push(add);
else next.push_back(add);
}
filled[square[0]][square[1]] = 1;
}
r++;
}
cout << r;
return 0;
}
Compilation message (stderr)
tracks.cpp: In function 'int main()':
tracks.cpp:16:8: error: request for member 'push_back' in 'next', which is of non-class type 'std::vector<std::vector<int> >()'
16 | next.push_back(first);
| ^~~~~~~~~
tracks.cpp:17:16: error: request for member 'empty' in 'next', which is of non-class type 'std::vector<std::vector<int> >()'
17 | while (!next.empty()) {
| ^~~~~
tracks.cpp:19:27: error: no matching function for call to 'begin(std::vector<std::vector<int> > (&)())'
19 | for (vector<int> go : next) q.push(go);
| ^~~~
In file included from /usr/include/c++/9/bits/range_access.h:36,
from /usr/include/c++/9/string:54,
from /usr/include/c++/9/bits/locale_classes.h:40,
from /usr/include/c++/9/bits/ios_base.h:41,
from /usr/include/c++/9/ios:42,
from /usr/include/c++/9/istream:38,
from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from tracks.cpp:1:
/usr/include/c++/9/initializer_list:89:5: note: candidate: 'template<class _Tp> constexpr const _Tp* std::begin(std::initializer_list<_Tp>)'
89 | begin(initializer_list<_Tp> __ils) noexcept
| ^~~~~
/usr/include/c++/9/initializer_list:89:5: note: template argument deduction/substitution failed:
tracks.cpp:19:27: note: mismatched types 'std::initializer_list<_Tp>' and 'std::vector<std::vector<int> > (*)()'
19 | for (vector<int> go : next) q.push(go);
| ^~~~
In file included from /usr/include/c++/9/string:54,
from /usr/include/c++/9/bits/locale_classes.h:40,
from /usr/include/c++/9/bits/ios_base.h:41,
from /usr/include/c++/9/ios:42,
from /usr/include/c++/9/istream:38,
from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from tracks.cpp:1:
/usr/include/c++/9/bits/range_access.h:48:5: note: candidate: 'template<class _Container> constexpr decltype (__cont.begin()) std::begin(_Container&)'
48 | begin(_Container& __cont) -> decltype(__cont.begin())
| ^~~~~
/usr/include/c++/9/bits/range_access.h:48:5: note: template argument deduction/substitution failed:
/usr/include/c++/9/bits/range_access.h: In substitution of 'template<class _Container> constexpr decltype (__cont.begin()) std::begin(_Container&) [with _Container = std::vector<std::vector<int> >()]':
tracks.cpp:19:27: required from here
/usr/include/c++/9/bits/range_access.h:48:50: error: request for member 'begin' in '__cont', which is of non-class type 'std::vector<std::vector<int> >()'
48 | begin(_Container& __cont) -> decltype(__cont.begin())
| ~~~~~~~^~~~~
/usr/include/c++/9/bits/range_access.h:58:5: note: candidate: 'template<class _Container> constexpr decltype (__cont.begin()) std::begin(const _Container&)'
58 | begin(const _Container& __cont) -> decltype(__cont.begin())
| ^~~~~
/usr/include/c++/9/bits/range_access.h:58:5: note: template argument deduction/substitution failed:
/usr/include/c++/9/bits/range_access.h: In substitution of 'template<class _Container> constexpr decltype (__cont.begin()) std::begin(const _Container&) [with _Container = std::vector<std::vector<int> >()]':
tracks.cpp:19:27: required from here
/usr/include/c++/9/bits/range_access.h:58:56: error: request for member 'begin' in '__cont', which is of non-class type 'std::vector<std::vector<int> >()'
58 | begin(const _Container& __cont) -> decltype(__cont.begin())
| ~~~~~~~^~~~~
/usr/include/c++/9/bits/range_access.h:87:5: note: candidate: 'template<class _Tp, long unsigned int _Nm> constexpr _Tp* std::begin(_Tp (&)[_Nm])'
87 | begin(_Tp (&__arr)[_Nm])
| ^~~~~
/usr/include/c++/9/bits/range_access.h:87:5: note: template argument deduction/substitution failed:
tracks.cpp:19:27: note: mismatched types '_Tp [_Nm]' and 'std::vector<std::vector<int> >()'
19 | for (vector<int> go : next) q.push(go);
| ^~~~
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from tracks.cpp:1:
/usr/include/c++/9/valarray:1214:5: note: candidate: 'template<class _Tp> _Tp* std::begin(std::valarray<_Tp>&)'
1214 | begin(valarray<_Tp>& __va)
| ^~~~~
/usr/include/c++/9/valarray:1214:5: note: template argument deduction/substitution failed:
tracks.cpp:19:27: note: mismatched types 'std::valarray<_Tp>' and 'std::vector<std::vector<int> >()'
19 | for (vector<int> go : next) q.push(go);
| ^~~~
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from tracks.cpp:1:
/usr/include/c++/9/valarray:1224:5: note: candidate: 'template<class _Tp> const _Tp* std::begin(const std::valarray<_Tp>&)'
1224 | begin(const valarray<_Tp>& __va)
| ^~~~~
/usr/include/c++/9/valarray:1224:5: note: template argument deduction/substitution failed:
tracks.cpp:19:27: note: mismatched types 'const std::valarray<_Tp>' and 'std::vector<std::vector<int> >()'
19 | for (vector<int> go : next) q.push(go);
| ^~~~
tracks.cpp:19:27: error: no matching function for call to 'end(std::vector<std::vector<int> > (&)())'
In file included from /usr/include/c++/9/bits/range_access.h:36,
from /usr/include/c++/9/string:54,
from /usr/include/c++/9/bits/locale_classes.h:40,
from /usr/include/c++/9/bits/ios_base.h:41,
from /usr/include/c++/9/ios:42,
from /usr/include/c++/9/istream:38,
from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from tracks.cpp:1:
/usr/include/c++/9/initializer_list:99:5: note: candidate: 'template<class _Tp> constexpr const _Tp* std::end(std::initializer_list<_Tp>)'
99 | end(initializer_list<_Tp> __ils) noexcept
| ^~~
/usr/include/c++/9/initializer_list:99:5: note: template argument deduction/substitution failed:
tracks.cpp:19:27: note: mismatched types 'std::initializer_list<_Tp>' and 'std::vector<std::vector<int> > (*)()'
19 | for (vector<int> go : next) q.push(go);
| ^~~~
In file included from /usr/include/c++/9/string:54,
from /usr/include/c++/9/bits/locale_classes.h:40,
from /usr/include/c++/9/bits/ios_base.h:41,
from /usr/include/c++/9/ios:42,
from /usr/include/c++/9/istream:38,
from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from tracks.cpp:1:
/usr/include/c++/9/bits/range_access.h:68:5: note: candidate: 'template<class _Container> constexpr decltype (__cont.end()) std::end(_Container&)'
68 | end(_Container& __cont) -> decltype(__cont.end())
| ^~~
/usr/include/c++/9/bits/range_access.h:68:5: note: template argument deduction/substitution failed:
/usr/include/c++/9/bits/range_access.h: In substitution of 'template<class _Container> constexpr decltype (__cont.end()) std::end(_Container&) [with _Container = std::vector<std::vector<int> >()]':
tracks.cpp:19:27: required from here
/usr/include/c++/9/bits/range_access.h:68:48: error: request for member 'end' in '__cont', which is of non-class type 'std::vector<std::vector<int> >()'
68 | end(_Container& __cont) -> decltype(__cont.end())
| ~~~~~~~^~~
/usr/include/c++/9/bits/range_access.h:78:5: note: candidate: 'template<class _Container> constexpr decltype (__cont.end()) std::end(const _Container&)'
78 | end(const _Container& __cont) -> decltype(__cont.end())
| ^~~
/usr/include/c++/9/bits/range_access.h:78:5: note: template argument deduction/substitution failed:
/usr/include/c++/9/bits/range_access.h: In substitution of 'template<class _Container> constexpr decltype (__cont.end()) std::end(const _Container&) [with _Container = std::vector<std::vector<int> >()]':
tracks.cpp:19:27: required from here
/usr/include/c++/9/bits/range_access.h:78:54: error: request for member 'end' in '__cont', which is of non-class type 'std::vector<std::vector<int> >()'
78 | end(const _Container& __cont) -> decltype(__cont.end())
| ~~~~~~~^~~
/usr/include/c++/9/bits/range_access.h:97:5: note: candidate: 'template<class _Tp, long unsigned int _Nm> constexpr _Tp* std::end(_Tp (&)[_Nm])'
97 | end(_Tp (&__arr)[_Nm])
| ^~~
/usr/include/c++/9/bits/range_access.h:97:5: note: template argument deduction/substitution failed:
tracks.cpp:19:27: note: mismatched types '_Tp [_Nm]' and 'std::vector<std::vector<int> >()'
19 | for (vector<int> go : next) q.push(go);
| ^~~~
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from tracks.cpp:1:
/usr/include/c++/9/valarray:1234:5: note: candidate: 'template<class _Tp> _Tp* std::end(std::valarray<_Tp>&)'
1234 | end(valarray<_Tp>& __va)
| ^~~
/usr/include/c++/9/valarray:1234:5: note: template argument deduction/substitution failed:
tracks.cpp:19:27: note: mismatched types 'std::valarray<_Tp>' and 'std::vector<std::vector<int> >()'
19 | for (vector<int> go : next) q.push(go);
| ^~~~
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from tracks.cpp:1:
/usr/include/c++/9/valarray:1244:5: note: candidate: 'template<class _Tp> const _Tp* std::end(const std::valarray<_Tp>&)'
1244 | end(const valarray<_Tp>& __va)
| ^~~
/usr/include/c++/9/valarray:1244:5: note: template argument deduction/substitution failed:
tracks.cpp:19:27: note: mismatched types 'const std::valarray<_Tp>' and 'std::vector<std::vector<int> >()'
19 | for (vector<int> go : next) q.push(go);
| ^~~~
tracks.cpp:19:35: error: request for member 'push' in 'q', which is of non-class type 'std::queue<std::vector<int> >()'
19 | for (vector<int> go : next) q.push(go);
| ^~~~
tracks.cpp:20:10: error: request for member 'clear' in 'next', which is of non-class type 'std::vector<std::vector<int> >()'
20 | next.clear();
| ^~~~~
tracks.cpp:21:15: error: request for member 'empty' in 'q', which is of non-class type 'std::queue<std::vector<int> >()'
21 | while (!q.empty()) {
| ^~~~~
tracks.cpp:22:30: error: request for member 'front' in 'q', which is of non-class type 'std::queue<std::vector<int> >()'
22 | vector<int> square = q.front();
| ^~~~~
tracks.cpp:23:9: error: request for member 'pop' in 'q', which is of non-class type 'std::queue<std::vector<int> >()'
23 | q.pop();
| ^~~
tracks.cpp:29:65: error: request for member 'push' in 'q', which is of non-class type 'std::queue<std::vector<int> >()'
29 | if (field[newX][newY] == field[square[0]][square[1]]) q.push(add);
| ^~~~
tracks.cpp:30:19: error: request for member 'push_back' in 'next', which is of non-class type 'std::vector<std::vector<int> >()'
30 | else next.push_back(add);
| ^~~~~~~~~
tracks.cpp:37:65: error: request for member 'push' in 'q', which is of non-class type 'std::queue<std::vector<int> >()'
37 | if (field[newX][newY] == field[square[0]][square[1]]) q.push(add);
| ^~~~
tracks.cpp:38:19: error: request for member 'push_back' in 'next', which is of non-class type 'std::vector<std::vector<int> >()'
38 | else next.push_back(add);
| ^~~~~~~~~