Compilare: user.cpp: In function ‘int main()’: user.cpp:16:24: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[100001]’ [-Wformat=] fscanf (fin, "%s", &s); ^ user.cpp:16:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%s", &s); ^ user.cpp:13:10: warning: ‘sol’ may be used uninitialized in this function [-Wmaybe-uninitialized] int n, sol, l, k, i, j; ^~~