Compilare: main.cpp: In function 'void solve(int)': main.cpp:124:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 124 | for(int i=0; i<scc[cmp].size(); i++) { | ~^~~~~~~~~~~~~~~~ main.cpp:127:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 127 | for(int i=0; i<scc[cmp].size(); i++) { | ~^~~~~~~~~~~~~~~~ main.cpp:141:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 141 | for(int i=0; i<scc[cmp].size(); i++) { | ~^~~~~~~~~~~~~~~~ main.cpp:153:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 153 | for(int i=0; i<scc[cmp].size(); i++) { | ~^~~~~~~~~~~~~~~~ main.cpp:157:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 157 | for(int i=0; i<scc[cmp].size(); i++) { | ~^~~~~~~~~~~~~~~~ main.cpp: In function 'void dfs(int)': main.cpp:194:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 194 | if(ns[comp[u]]==scc[comp[u]].size()) { | ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:238:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 238 | for(int i=0; i<components.size(); i++) { | ~^~~~~~~~~~~~~~~~~~