Compilare: main.cpp: In function 'int path(int)': main.cpp:13:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0 ; j < G[u].size() ; j ++) ~~^~~~~~~~~~~~~ main.cpp:23:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0 ; j < G[u].size() ; j ++) ~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:39:17: warning: unused variable 'j' [-Wunused-variable] int n , i , j , x , y , lg , cuplaj , gasit; ^ main.cpp:37:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("defrisare.in" , "r" , stdin); ^ main.cpp:38:44: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("defrisare.out" , "w" , stdout); ^ main.cpp:40:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &n); ^ main.cpp:42:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &h[i]); ^ main.cpp:45:40: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d" , &x , &y , &lg); ^