Compilare: user.cpp: In function ‘void preprocess()’: user.cpp:91:80: warning: narrowing conversion of ‘std::min<double>((*(const double*)(& P[i].point::y)), (*(const double*)(& P[(i + 1)].point::y)))’ from ‘const double’ to ‘int’ inside { } [-Wnarrowing] V[P[i].x].push_back({min(P[i].y, P[i + 1].y), max(P[i].y, P[i + 1].y)}); ^ user.cpp:93:72: warning: narrowing conversion of ‘std::min<double>((*(const double*)(& P[1].point::y)), (*(const double*)(& P[n].point::y)))’ from ‘const double’ to ‘int’ inside { } [-Wnarrowing] V[P[1].x].push_back({min(P[1].y, P[n].y), max(P[1].y, P[n].y)}); ^ user.cpp: In function ‘int inside(point)’: user.cpp:138:61: warning: right operand of comma operator has no effect [-Wunused-value] s = 0, d = Stripes[pos].Segments.size() - 1, m, best = -1; ^ user.cpp: In function ‘int main()’: user.cpp:171:29: warning: narrowing conversion of ‘y’ from ‘int’ to ‘double’ inside { } [-Wnarrowing] sol += inside({x, y}); ^