Compilare: main.cpp:1:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 1 | #import<bits/stdc++.h> | ^~~~~~ main.cpp:4:24: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 4 | string s;map<int,int>v;main(){fstream("eq4.in")>>c>>s>>a>>b>>e;for(;s[i];i++){if(s[i]<46&&s[i]>42+isdigit(s[i])){string n{s[i++]};while(isdigit(s[i]))n+=s[i++];n+=n.size()-1?"":"1";s[i]&&strchr("xyzt",s[i])?m[s[i]]+=stoi(n):(i--,l+=stoi(n));}}for(i=a;i<=b;i++)for(j=a;j<=b;v[i*m['x']+j++*m['y']]++);for(int i=a;i<=b;i++)for(j=a;j<=b;B+=v[e-l-i*m['z']-j++*m['t']]);ofstream("eq4.out")<<(c-2?m['x']+m['y']+m['z']+m['t']+l:B);} | ^~~~ main.cpp: In function 'int main()': main.cpp:4:214: warning: array subscript has type 'char' [-Wchar-subscripts] 4 | string s;map<int,int>v;main(){fstream("eq4.in")>>c>>s>>a>>b>>e;for(;s[i];i++){if(s[i]<46&&s[i]>42+isdigit(s[i])){string n{s[i++]};while(isdigit(s[i]))n+=s[i++];n+=n.size()-1?"":"1";s[i]&&strchr("xyzt",s[i])?m[s[i]]+=stoi(n):(i--,l+=stoi(n));}}for(i=a;i<=b;i++)for(j=a;j<=b;v[i*m['x']+j++*m['y']]++);for(int i=a;i<=b;i++)for(j=a;j<=b;B+=v[e-l-i*m['z']-j++*m['t']]);ofstream("eq4.out")<<(c-2?m['x']+m['y']+m['z']+m['t']+l:B);} | ^