Eroare de compilare: user.cpp:10:9: error: ‘int time’ redeclared as different kind of symbol int cr, time=1, last=0, cn; ^ In file included from /usr/include/pthread.h:26:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/gthr-default.h:35, from /usr/include/i386-linux-gnu/c++/4.8/bits/gthr.h:148, from /usr/include/c++/4.8/ext/atomicity.h:33, from /usr/include/c++/4.8/bits/basic_string.h:39, from /usr/include/c++/4.8/string:52, from /usr/include/c++/4.8/random:41, from /usr/include/c++/4.8/bits/stl_algo.h:65, from /usr/include/c++/4.8/algorithm:62, from user.cpp:4: /usr/include/time.h:186:15: error: previous declaration of ‘time_t time(time_t*)’ extern time_t time (time_t *__timer) __THROW; ^ user.cpp: In function ‘void dfs(int)’: user.cpp:33:11: error: invalid conversion from ‘time_t (*)(time_t*)throw () {aka long int (*)(long int*)throw ()}’ to ‘__gnu_cxx::__alloc_traits<std::allocator<int> >::value_type {aka int}’ [-fpermissive] low[u]=time; ^ user.cpp:34:12: error: invalid conversion from ‘time_t (*)(time_t*)throw () {aka long int (*)(long int*)throw ()}’ to ‘__gnu_cxx::__alloc_traits<std::allocator<int> >::value_type {aka int}’ [-fpermissive] disc[u]=time; ^ user.cpp:35:9: error: ISO C++ forbids incrementing a pointer of type ‘time_t (*)(time_t*)throw () {aka long int (*)(long int*)throw ()}’ [-fpermissive] time++; ^ user.cpp:35:9: error: lvalue required as increment operand user.cpp:36:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<G[u].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:79:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1; j<rasp[i].size(); j++) ^ user.cpp:58:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("biconex.in", "r", stdin); ^ user.cpp:59:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("biconex.out","w", stdout); ^ user.cpp:61:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:65:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &u,&v); ^