Compilare: main.cpp: In function 'void dfs(int, int, int)': main.cpp:30:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<g[nod].size(); i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:162:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<pathuri[i].size()/2; j++){ ~^~~~~~~~~~~~~~~~~~~~ main.cpp:144:21: warning: unused variable 'tip' [-Wunused-variable] int n,m,i,x,y,j,tip,ans,z; ^~~ main.cpp:144:25: warning: unused variable 'ans' [-Wunused-variable] int n,m,i,x,y,j,tip,ans,z; ^~~ main.cpp:142:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] { freopen("arb4.in", "r", stdin); ^ main.cpp:143:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("arb4.out", "w", stdout); ^ main.cpp:145:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ main.cpp:151:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &x, &y, &z); ^ main.cpp:171:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &x, &y, &z); ^