Compilare: main.cpp: In function 'int main()': main.cpp:3:39: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 3 | #define FOR(i, a, b) for(int i = a; i <= b; ++i) | ^ main.cpp:30:5: note: in expansion of macro 'FOR' 30 | FOR(i, 0, a.size() - 1) | ^~~ main.cpp:33:74: warning: comparison of integer expressions of different signedness: 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | if(!d.count(a.size() - 1 - 2 * i) || d[a.size() - 1 - 2 * i] > a.size()) main.cpp:3:39: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 3 | #define FOR(i, a, b) for(int i = a; i <= b; ++i) | ^ main.cpp:40:5: note: in expansion of macro 'FOR' 40 | FOR(i, 0, b.size() - 1) | ^~~ main.cpp:43:74: warning: comparison of integer expressions of different signedness: 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | if(!d.count(b.size() - 1 - 2 * i) || d[b.size() - 1 - 2 * i] > b.size()) main.cpp:3:39: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 3 | #define FOR(i, a, b) for(int i = a; i <= b; ++i) | ^ main.cpp:50:5: note: in expansion of macro 'FOR' 50 | FOR(i, 0, c.size() - 1) | ^~~ main.cpp:53:74: warning: comparison of integer expressions of different signedness: 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | if(!d.count(c.size() - 1 - 2 * i) || d[c.size() - 1 - 2 * i] > c.size()) main.cpp:69:54: warning: comparison of integer expressions of different signedness: 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'} and 'long long unsigned int' [-Wsign-compare] 69 | if(!d.count(x + a.size()) || d[x + a.size()] > d[x] + a.size()) main.cpp:72:54: warning: comparison of integer expressions of different signedness: 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'} and 'long long unsigned int' [-Wsign-compare] 72 | if(!d.count(x - a.size()) || d[x - a.size()] > d[x] + a.size()) main.cpp:76:54: warning: comparison of integer expressions of different signedness: 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'} and 'long long unsigned int' [-Wsign-compare] 76 | if(!d.count(x + b.size()) || d[x + b.size()] > d[x] + b.size()) main.cpp:79:54: warning: comparison of integer expressions of different signedness: 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'} and 'long long unsigned int' [-Wsign-compare] 79 | if(!d.count(x - b.size()) || d[x - b.size()] > d[x] + b.size()) main.cpp:83:54: warning: comparison of integer expressions of different signedness: 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'} and 'long long unsigned int' [-Wsign-compare] 83 | if(!d.count(x + c.size()) || d[x + c.size()] > d[x] + c.size()) main.cpp:86:54: warning: comparison of integer expressions of different signedness: 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'} and 'long long unsigned int' [-Wsign-compare] 86 | if(!d.count(x - c.size()) || d[x - c.size()] > d[x] + c.size())