Compilare: main.cpp: In function 'int main()': main.cpp:119:21: warning: unused variable 'r' [-Wunused-variable] int r = v[i].first.second; ^ main.cpp:120:21: warning: unused variable 'l' [-Wunused-variable] int l = v[i].first.first; ^ main.cpp:92:22: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&t); ^ main.cpp:95:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&n,&l,&h); ^ main.cpp:99:42: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&l,&r,&h); ^