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        main.cpp: In function ‘std::vector<int> max_angle(Point, int, int)’:
main.cpp:50:30: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::vector<Point>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
   50 |             for(int i = 1; i < convex_hull.size() - 1; i++) {
      |                            ~~^~~~~~~~~~~~~~~~~~~~~~~~
main.cpp: In function ‘std::vector<Point> get_candidates(int, Point, Point)’:
main.cpp:88:12: warning: init-statement in selection statements only available with ‘-std=c++17’ or ‘-std=gnu++17’
   88 |         if(Point p = {1.0 * -L, m * (-L) + n}; check(p)) {
      |            ^~~~~
main.cpp:91:12: warning: init-statement in selection statements only available with ‘-std=c++17’ or ‘-std=gnu++17’
   91 |         if(Point p = {1.0 * L, m * L + n}; check(p)) {
      |            ^~~~~
main.cpp:94:12: warning: init-statement in selection statements only available with ‘-std=c++17’ or ‘-std=gnu++17’
   94 |         if(Point p = {(-L - n) / m, 1.0 * -L}; check(p)) {
      |            ^~~~~
main.cpp:97:12: warning: init-statement in selection statements only available with ‘-std=c++17’ or ‘-std=gnu++17’
   97 |         if(Point p = {(L - n) / m, 1.0 * L}; check(p)) {
      |            ^~~~~
main.cpp: In function ‘int main()’:
main.cpp:157:48: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::vector<Point>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
  157 |     for(int i = 0, t = 1; i >= 0; i += (t = (i == O.size() - 1 ? -t : t))) {
      |                                              ~~^~~~~~~~~~~~~~~
main.cpp:171:22: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::vector<Point>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
  171 |     for(int i = 0; i < convex_hull.size() - 1; i++) {
      |                    ~~^~~~~~~~~~~~~~~~~~~~~~~~

    

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