Compilare: user.cpp: In function ‘int main()’: user.cpp:54:11: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] cin >> s + 1; ^ user.cpp:52:9: warning: unused variable ‘m’ [-Wunused-variable] int n, m, i, j,k,nr; ^ user.cpp:52:17: warning: unused variable ‘k’ [-Wunused-variable] int n, m, i, j,k,nr; ^ user.cpp:52:19: warning: unused variable ‘nr’ [-Wunused-variable] int n, m, i, j,k,nr; ^ user.cpp: In function ‘int solve(int, int)’: user.cpp:49:1: warning: control reaches end of non-void function [-Wreturn-type] } ^