chessboard.cpp: In function 'long long int f(long long int, long long int)':
chessboard.cpp:8:9: error: 'min' was not declared in this scope; did you mean 'std::min'?
8 | return min(a, s * 2 - a);
| ^~~
| std::min
In file included from /usr/include/c++/10/algorithm:62,
from chessboard.cpp:2:
/usr/include/c++/10/bits/stl_algo.h:3474:5: note: 'std::min' declared here
3474 | min(initializer_list<_Tp> __l, _Compare __comp)
| ^~~
At global scope:
cc1plus: error: '::main' must return 'int'
chessboard.cpp: In function 'int main()':
chessboard.cpp:12:9: error: 'N' was not declared in this scope
12 | int x1[N], y1[N], x2[N], y2[N];
| ^
chessboard.cpp:14:2: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
14 | cin >> n >> k;
| ^~~
| std::cin
In file included from chessboard.cpp:1:
/usr/include/c++/10/iostream:60:18: note: 'std::cin' declared here
60 | extern istream cin; /// Linked to standard input
| ^~~
chessboard.cpp:15:7: error: 'i' was not declared in this scope
15 | for (i = 0; i < k; i++){
| ^
chessboard.cpp:16:14: error: 'x1' was not declared in this scope
16 | cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
| ^~
chessboard.cpp:16:23: error: 'y1' was not declared in this scope
16 | cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
| ^~
chessboard.cpp:16:32: error: 'x2' was not declared in this scope
16 | cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
| ^~
chessboard.cpp:16:41: error: 'y2' was not declared in this scope
16 | cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
| ^~
chessboard.cpp:20:7: error: 'i' was not declared in this scope
20 | for (i = 1; i < n; i++)
| ^
chessboard.cpp:22:9: error: 's' was not declared in this scope
22 | k = (s / t) * (s / t) / 2 * t * t;
| ^
chessboard.cpp:23:42: error: 'x2' was not declared in this scope
23 | for (i = 0; i < n; i++) temp += (f(i, x2[i]) - f(i, x1[i])) * (f(i, y2[i]) - f(i, y1[i]));
| ^~
chessboard.cpp:23:56: error: 'x1' was not declared in this scope
23 | for (i = 0; i < n; i++) temp += (f(i, x2[i]) - f(i, x1[i])) * (f(i, y2[i]) - f(i, y1[i]));
| ^~
chessboard.cpp:23:72: error: 'y2' was not declared in this scope
23 | for (i = 0; i < n; i++) temp += (f(i, x2[i]) - f(i, x1[i])) * (f(i, y2[i]) - f(i, y1[i]));
| ^~
chessboard.cpp:23:86: error: 'y1' was not declared in this scope
23 | for (i = 0; i < n; i++) temp += (f(i, x2[i]) - f(i, x1[i])) * (f(i, y2[i]) - f(i, y1[i]));
| ^~
chessboard.cpp:24:19: error: 'min' was not declared in this scope; did you mean 'std::min'?
24 | ans = min(ans, min(temp, n * n - temp));
| ^~~
| std::min
In file included from /usr/include/c++/10/algorithm:62,
from chessboard.cpp:2:
/usr/include/c++/10/bits/stl_algo.h:3474:5: note: 'std::min' declared here
3474 | min(initializer_list<_Tp> __l, _Compare __comp)
| ^~~
chessboard.cpp:24:10: error: 'min' was not declared in this scope; did you mean 'std::min'?
24 | ans = min(ans, min(temp, n * n - temp));
| ^~~
| std::min
In file included from /usr/include/c++/10/algorithm:62,
from chessboard.cpp:2:
/usr/include/c++/10/bits/stl_algo.h:3474:5: note: 'std::min' declared here
3474 | min(initializer_list<_Tp> __l, _Compare __comp)
| ^~~
chessboard.cpp:26:2: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
26 | cout << ans << '\n';
| ^~~~
| std::cout
In file included from chessboard.cpp:1:
/usr/include/c++/10/iostream:61:18: note: 'std::cout' declared here
61 | extern ostream cout; /// Linked to standard output
| ^~~~
chessboard.cpp:13:12: warning: unused variable 'tot' [-Wunused-variable]
13 | int n, k, tot, t, temp, ans;
| ^~~