Compilare: main.cpp: In function 'bool Solver::compute_parity(std::vector<int>&)': main.cpp:151:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 151 | for(int i = 0; i < perm.size(); i++) { | ~~^~~~~~~~~~~~~ main.cpp: In instantiation of 'void Solver::Dinic<EDGE_FLOW_DATA, NETWORK_FLOW_DATA>::add_edge(int, int, int) [with EDGE_FLOW_DATA = signed char; NETWORK_FLOW_DATA = short int]': main.cpp:179:53: required from here main.cpp:28:34: warning: narrowing conversion of 'to' from 'int' to 'int16_t' {aka 'short int'} [-Wnarrowing] 28 | edges.push_back({.to=to, .flow=0, .cap=cap}); | ^~ main.cpp:28:52: warning: narrowing conversion of 'cap' from 'int' to 'signed char' [-Wnarrowing] 28 | edges.push_back({.to=to, .flow=0, .cap=cap}); | ^~~ main.cpp:29:34: warning: narrowing conversion of 'from' from 'int' to 'int16_t' {aka 'short int'} [-Wnarrowing] 29 | edges.push_back({.to=from, .flow=0, .cap=0}); | ^~~~ main.cpp: In instantiation of 'NETWORK_FLOW_DATA Solver::Dinic<EDGE_FLOW_DATA, NETWORK_FLOW_DATA>::do_push(int, NETWORK_FLOW_DATA) [with EDGE_FLOW_DATA = signed char; NETWORK_FLOW_DATA = short int]': main.cpp:84:48: required from 'NETWORK_FLOW_DATA Solver::Dinic<EDGE_FLOW_DATA, NETWORK_FLOW_DATA>::get_flow() [with EDGE_FLOW_DATA = signed char; NETWORK_FLOW_DATA = short int]' main.cpp:190:34: required from here main.cpp:60:49: warning: comparison of integer expressions of different signedness: 'short int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | for(auto &ind = edge_ind[node]; ind < adj[node].size(); ind++) { | ~~~~^~~~~~~~~~~~~~~~~~