Eroare de compilare: main.cpp: In function 'int main()': main.cpp:2:73: error: no match for 'operator[]' (operand types are 'std::ifstream' {aka 'std::basic_ifstream<char>'} and 'int') 2 | int f[400001],n,S,a,i;char c;int main(){std::ifstream f("fsb.in");f>>n;f[n]=1;for(;i!=n;++i){f>>c;S+=((c-'0')<<1)-1;a+=f[n+S];++f[n+S];}std::ofstream g("fsb.out");g<<a;} | ^ main.cpp:2:121: error: no match for 'operator[]' (operand types are 'std::ifstream' {aka 'std::basic_ifstream<char>'} and 'int') 2 | int f[400001],n,S,a,i;char c;int main(){std::ifstream f("fsb.in");f>>n;f[n]=1;for(;i!=n;++i){f>>c;S+=((c-'0')<<1)-1;a+=f[n+S];++f[n+S];}std::ofstream g("fsb.out");g<<a;} | ^ main.cpp:2:130: error: no match for 'operator[]' (operand types are 'std::ifstream' {aka 'std::basic_ifstream<char>'} and 'int') 2 | int f[400001],n,S,a,i;char c;int main(){std::ifstream f("fsb.in");f>>n;f[n]=1;for(;i!=n;++i){f>>c;S+=((c-'0')<<1)-1;a+=f[n+S];++f[n+S];}std::ofstream g("fsb.out");g<<a;} | ^ Non zero exit status: 1