Compilare: main.cpp: In function 'void Manacher(const std::vector<int>&)': main.cpp:45:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | for (int i = 1; i < v.size() - 1; i++) { | ~~^~~~~~~~~~~~~~ main.cpp:50:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | while (i - k >= 0 && i + k < v.size() && v[i - k] == v[i + k]) | ~~~~~~^~~~~~~~~~ main.cpp:70:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 70 | if (i + p[i] + 2 <= v.size() - 1) | ~~~~~~~~~~~~~^~~~~~~~~~~~~~~ main.cpp:82:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 82 | for (int i = 2; i < v.size(); i += 2) { | ~~^~~~~~~~~~ main.cpp: In function 'long long int Solve(const std::vector<int>&)': main.cpp:108:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 108 | for (int i = 2; i < v.size(); i += 2) | ~~^~~~~~~~~~ main.cpp:112:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 112 | for (int i = 2; i < v.size(); i += 2) | ~~^~~~~~~~~~ main.cpp:118:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 118 | for (int i = 0; i < v.size(); i++) | ~~^~~~~~~~~~ main.cpp:98:9: warning: unused variable 'n' [-Wunused-variable] 98 | int n = v.size() / 2; | ^