Compilare: main.cpp: In function 'int main()': main.cpp:74:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (p1 < lvl[i-1].size() && p2 < v[road[i]].size()){ ~~~^~~~~~~~~~~~~~~~~ main.cpp:74:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (p1 < lvl[i-1].size() && p2 < v[road[i]].size()){ ~~~^~~~~~~~~~~~~~~~~~~ main.cpp:89:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (p1 < lvl[i-1].size()){ ~~~^~~~~~~~~~~~~~~~~ main.cpp:98:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (p2 < v[road[i]].size()){ ~~~^~~~~~~~~~~~~~~~~~~ main.cpp:34:19: warning: unused variable 'vecin' [-Wunused-variable] int nod , j , vecin , sol , p1 , p2; ^~~~~ main.cpp:35:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&n,&x); ^ main.cpp:37:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&a,&b); ^ main.cpp:44:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&val[i]); ^