race.cpp: In function 'void dfs(long long int, long long int)':
race.cpp:9:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
9 | for (long long i=0; i<adj[u].size(); i++)
| ~^~~~~~~~~~~~~~
race.cpp: In function 'void dfs2(long long int, long long int, long long int, long long int)':
race.cpp:24:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
24 | for (long long i=0; i<adj[u].size(); i++)
| ~^~~~~~~~~~~~~~
race.cpp: In function 'void dfs3(long long int, long long int)':
race.cpp:35:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
35 | for (long long i=0; i<adj[u].size(); i++)
| ~^~~~~~~~~~~~~~
race.cpp: In function 'void recur(std::vector<long long int>)':
race.cpp:57:24: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
57 | for (long long j=0; j<adj[u].size(); j++)
| ~^~~~~~~~~~~~~~
race.cpp:70:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
70 | for (long long i=0; i<adj[center].size(); i++)
| ~^~~~~~~~~~~~~~~~~~~
race.cpp:74:24: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
74 | for (long long j=0; j<val.size(); j++)
| ~^~~~~~~~~~~
race.cpp:76:24: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
76 | for (long long j=0; j<val.size(); j++)
| ~^~~~~~~~~~~
race.cpp:89:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
89 | for (long long i=0; i<val2.size(); i++)
| ~^~~~~~~~~~~~
race.cpp:92:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
92 | for (long long i=0; i<adj[center].size(); i++)
| ~^~~~~~~~~~~~~~~~~~~
race.cpp:95:24: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
95 | for (long long j=0; j<adj[v].size(); j++)
| ~^~~~~~~~~~~~~~