matrice2.cpp: In function 'bool bfs(int, int)': matrice2.cpp:38: warning: comparison between signed and unsigned integer expressions matrice2.cpp: In function 'int dfs(int, int, int)': matrice2.cpp:49: warning: comparison between signed and unsigned integer expressions matrice2.cpp: In function 'int maxFlow(int, int)': matrice2.cpp:61: warning: suggest parentheses around assignment used as truth value matrice2.cpp: In function 'int main()': matrice2.cpp:69: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result matrice2.cpp:70: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result matrice2.cpp:71: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result matrice2.cpp:75: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result