Compilare: main.cpp: In function 'int fill(int, int, int)': main.cpp:69:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:103:27: warning: statement has no effect [-Wunused-value] map[i][j] - 1; ~~~~~~~~~~^~~