Compilare: main.cpp: In function 'int main()': main.cpp:10:47: warning: unused variable 'i1' [-Wunused-variable] 10 | int cer, n, m, val, y1, y2, x1, x2, i, j, i1, j2, xmin, xmax, ymin, ymax, x, y; | ^~ main.cpp:10:51: warning: unused variable 'j2' [-Wunused-variable] 10 | int cer, n, m, val, y1, y2, x1, x2, i, j, i1, j2, xmin, xmax, ymin, ymax, x, y; | ^~ main.cpp:10:79: warning: unused variable 'x' [-Wunused-variable] 10 | int cer, n, m, val, y1, y2, x1, x2, i, j, i1, j2, xmin, xmax, ymin, ymax, x, y; | ^ main.cpp:10:82: warning: unused variable 'y' [-Wunused-variable] 10 | int cer, n, m, val, y1, y2, x1, x2, i, j, i1, j2, xmin, xmax, ymin, ymax, x, y; | ^