Compilare: user.cpp: In function ‘int main()’: user.cpp:53:19: warning: statement has no effect [-Wunused-value] for(it; it <= j; ansq += mat[unde][y] - mat[unde][x - 1] , it += batog , unde++); ^ user.cpp:55:19: warning: statement has no effect [-Wunused-value] for(it; it <= j; ansq += mat[unde][y] , it += batog , unde++); ^ user.cpp:26:39: warning: iteration 100u invokes undefined behavior [-Waggressive-loop-optimizations] mat[buc][j] = carac[j]; ^ user.cpp:23:13: note: containing loop for(int j = 1; j <= 1000; ++j) ^