Compilare: main.cpp:1:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 1 | #import<fstream> | ^~~~~~ main.cpp:3:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 3 | main(){int v[100001],a[100001],m,p,i,dr;string s;f>>s>>m;for(;i<s.size();i++){if(s[i]=='(')v[++dr]=i;else if(s[i]==')')a[v[dr--]]=i;}while(m--)f>>p,g<<a[p]<<" ";} | ^~~~ main.cpp: In function 'int main()': main.cpp:3:64: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 3 | main(){int v[100001],a[100001],m,p,i,dr;string s;f>>s>>m;for(;i<s.size();i++){if(s[i]=='(')v[++dr]=i;else if(s[i]==')')a[v[dr--]]=i;}while(m--)f>>p,g<<a[p]<<" ";} | ~^~~~~~~~~ main.cpp:3:63: warning: 'i' may be used uninitialized [-Wmaybe-uninitialized] 3 | main(){int v[100001],a[100001],m,p,i,dr;string s;f>>s>>m;for(;i<s.size();i++){if(s[i]=='(')v[++dr]=i;else if(s[i]==')')a[v[dr--]]=i;}while(m--)f>>p,g<<a[p]<<" ";} | ^ main.cpp:3:36: note: 'i' was declared here 3 | main(){int v[100001],a[100001],m,p,i,dr;string s;f>>s>>m;for(;i<s.size();i++){if(s[i]=='(')v[++dr]=i;else if(s[i]==')')a[v[dr--]]=i;}while(m--)f>>p,g<<a[p]<<" ";} | ^ main.cpp:3:99: warning: 'dr' may be used uninitialized [-Wmaybe-uninitialized] 3 | main(){int v[100001],a[100001],m,p,i,dr;string s;f>>s>>m;for(;i<s.size();i++){if(s[i]=='(')v[++dr]=i;else if(s[i]==')')a[v[dr--]]=i;}while(m--)f>>p,g<<a[p]<<" ";} | ~~~~~~~^~ main.cpp:3:38: note: 'dr' was declared here 3 | main(){int v[100001],a[100001],m,p,i,dr;string s;f>>s>>m;for(;i<s.size();i++){if(s[i]=='(')v[++dr]=i;else if(s[i]==')')a[v[dr--]]=i;}while(m--)f>>p,g<<a[p]<<" ";} | ^~