Compilare: main.cpp: In function 'int main()': main.cpp:58:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1 ; i < li.size() ; ++ i) { ~~^~~~~~~~~~~ main.cpp:55:13: warning: unused variable 'value' [-Wunused-variable] int value = vv.first ; ^~~~~ main.cpp:48:18: warning: unused variable 'left' [-Wunused-variable] int suma(0), left, right ; ^~~~ main.cpp:48:24: warning: unused variable 'right' [-Wunused-variable] int suma(0), left, right ; ^~~~~ main.cpp:44:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d\n", &n) ; ^ main.cpp:46:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d ", v + i) ; ^