Compilare: main.cpp: In function 'void solveHard(int, int, int)': main.cpp:61:7: warning: unused variable 'pozLine' [-Wunused-variable] int pozLine(0) ; ^~~~~~~ main.cpp:68:7: warning: unused variable 'pozCol' [-Wunused-variable] int pozCol(0) ; ^~~~~~ main.cpp: In function 'int main()': main.cpp:93:50: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d\n%d %d %d", &query, &n, &m, &k) ; ^ main.cpp:95:103: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d %d %d", &buildings[i].x1, &buildings[i].y1, &buildings[i].x2, &buildings[i].y2) ; ^