Compilare: main.cpp: In function 'int main()': main.cpp:123:21: warning: unused variable 'j' [-Wunused-variable] int n , m , i , j , poz , mini , maxi , sol = 0 , elem = 0 , st , dr , bun , inc , sf; ^ main.cpp:123:25: warning: unused variable 'poz' [-Wunused-variable] int n , m , i , j , poz , mini , maxi , sol = 0 , elem = 0 , st , dr , bun , inc , sf; ^~~ main.cpp:123:55: warning: unused variable 'elem' [-Wunused-variable] int n , m , i , j , poz , mini , maxi , sol = 0 , elem = 0 , st , dr , bun , inc , sf; ^~~~ main.cpp:123:82: warning: unused variable 'inc' [-Wunused-variable] int n , m , i , j , poz , mini , maxi , sol = 0 , elem = 0 , st , dr , bun , inc , sf; ^~~ main.cpp:123:88: warning: unused variable 'sf' [-Wunused-variable] int n , m , i , j , poz , mini , maxi , sol = 0 , elem = 0 , st , dr , bun , inc , sf; ^~ main.cpp:128:37: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff , 1 , 12000000 , fin); ^