Compilare: main.cpp: In function 'bool BFS(int)': main.cpp:72:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | for (int i = 0; i < G[u].size(); ++ i) { | ~~^~~~~~~~~~~~~ main.cpp: In function 'int DFS(int, int)': main.cpp:97:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 97 | for (int &i = ptr[node]; i < G[node].size(); ++ i) { | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:199:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 199 | for (int u = 0; u < A[0].size(); ++ u) { | ~~^~~~~~~~~~~~~ main.cpp:209:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 209 | for (int u = 0; u < A[1].size(); ++ u) { | ~~^~~~~~~~~~~~~ main.cpp:218:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 218 | for (int u = 0; u < A[0].size(); ++ u) | ~~^~~~~~~~~~~~~ main.cpp:219:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 219 | for (int v = 0; v < A[1].size(); ++ v) | ~~^~~~~~~~~~~~~ main.cpp:223:57: warning: narrowing conversion of '((A[0].std::vector<std::vector<int> >::size() + ((std::vector<std::vector<int> >::size_type)v)) + 1)' from 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 223 | edges.push_back({u + 1, A[0].size() + v + 1, 1}); | ~~~~~~~~~~~~~~~~^~~ main.cpp:224:50: warning: narrowing conversion of '((A[0].std::vector<std::vector<int> >::size() + ((std::vector<std::vector<int> >::size_type)v)) + 1)' from 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 224 | edges.push_back({A[0].size() + v + 1, u + 1, 0}); | ~~~~~~~~~~~~~~~~^~~ main.cpp:230:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 230 | for (int u = 0; u < A[0].size(); ++ u) { | ~~^~~~~~~~~~~~~ main.cpp:240:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 240 | for (int v = 0; v < A[1].size(); ++ v) { | ~~^~~~~~~~~~~~~ main.cpp:243:42: warning: narrowing conversion of '((A[0].std::vector<std::vector<int> >::size() + ((std::vector<std::vector<int> >::size_type)v)) + 1)' from 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 243 | edges.push_back({A[0].size() + v + 1, n + 1, 1}); | ~~~~~~~~~~~~~~~~^~~ main.cpp:244:49: warning: narrowing conversion of '((A[0].std::vector<std::vector<int> >::size() + ((std::vector<std::vector<int> >::size_type)v)) + 1)' from 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 244 | edges.push_back({n + 1, A[0].size() + v + 1, 0}); | ~~~~~~~~~~~~~~~~^~~ main.cpp:261:18: warning: suggest parentheses around assignment used as truth value [-Wparentheses] 261 | while (t = DFS(0, 1e9)) flow += t; | ~~^~~~~~~~~~~~~ main.cpp: In function 'bool Div(int, int, int, int, int)': main.cpp:174:1: warning: control reaches end of non-void function [-Wreturn-type] 174 | } | ^