Compilare: main.cpp:10: warning: "INT_MAX" redefined 10 | #define INT_MAX 1000000000 | In file included from /usr/include/c++/10/climits:42, from main.cpp:5: /usr/lib/gcc/x86_64-linux-gnu/10/include/limits.h:120: note: this is the location of the previous definition 120 | #define INT_MAX __INT_MAX__ | main.cpp: In function 'int main()': main.cpp:53:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for(int i = 0 ; i < m[k].size() ; i ++) | ~~^~~~~~~~~~~~~