Compilare: main.cpp: In function 'int closestFibo(int)': main.cpp:56:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | for (int i = 0; i < fibo.size(); i++) { | ~~^~~~~~~~~~~~~ main.cpp: In function 'void solve2()': main.cpp:231:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 231 | for (int i = 0; i < finalSums.size(); i++) { | ~~^~~~~~~~~~~~~~~~~~ main.cpp:238:43: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 238 | for (int i = 0; i < finalSums.size() - 1; i += 2) { | ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:241:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 241 | if (i < finalSums.size() - 2) { | ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:255:43: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 255 | for (int i = 1; i < finalSums.size() - 1; i += 2) { | ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:258:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 258 | if (i < finalSums.size() - 2) { | ~~^~~~~~~~~~~~~~~~~~~~~~