Eroare de compilare: user.cpp:2:1: error: ‘ifstream’ does not name a type ifstream f("alibaba.in");ofstream g("alibaba.out");char v[10001],a;int n,k,i,m;int main(){f>>n>>k>>v[1];m=1;for(i=2;i<=n;i++){f>>a;while(k>0&&a>v[m]&&m>0){k--;m--;}v[++m]=a;}for (i=1;i<=m-k;i++)g<<v[i];return 0;} ^ user.cpp:2:26: error: ‘ofstream’ does not name a type ifstream f("alibaba.in");ofstream g("alibaba.out");char v[10001],a;int n,k,i,m;int main(){f>>n>>k>>v[1];m=1;for(i=2;i<=n;i++){f>>a;while(k>0&&a>v[m]&&m>0){k--;m--;}v[++m]=a;}for (i=1;i<=m-k;i++)g<<v[i];return 0;} ^ user.cpp: In function ‘int main()’: user.cpp:2:91: error: ‘f’ was not declared in this scope ifstream f("alibaba.in");ofstream g("alibaba.out");char v[10001],a;int n,k,i,m;int main(){f>>n>>k>>v[1];m=1;for(i=2;i<=n;i++){f>>a;while(k>0&&a>v[m]&&m>0){k--;m--;}v[++m]=a;}for (i=1;i<=m-k;i++)g<<v[i];return 0;} ^ user.cpp:2:195: error: ‘g’ was not declared in this scope ifstream f("alibaba.in");ofstream g("alibaba.out");char v[10001],a;int n,k,i,m;int main(){f>>n>>k>>v[1];m=1;for(i=2;i<=n;i++){f>>a;while(k>0&&a>v[m]&&m>0){k--;m--;}v[++m]=a;}for (i=1;i<=m-k;i++)g<<v[i];return 0;} ^