Compilare: user.cpp: In function ‘int main()’: user.cpp:52:9: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] cin>>s+1; ^ user.cpp:57:10: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] cin>>p+1; ^ user.cpp:65:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<vis[i].size();++j) ^ user.cpp:45:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("carte.in","r",stdin); ^ user.cpp:46:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("carte.out","w",stdout); ^