Eroare de compilare: user.cpp: In function ‘int cmlsc(std::vector<int>, int)’: user.cpp:52:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<a.size(); i++){ ~^~~~~~~~~ user.cpp: At global scope: user.cpp:145:11: error: redefinition of ‘std::ifstream f’ ifstream f("interclasare.in"); ^ user.cpp:9:10: note: ‘std::ifstream f’ previously declared here ifstream f("interclasare.in"); ^ user.cpp:146:11: error: redefinition of ‘std::ofstream g’ ofstream g("interclasare.out"); ^ user.cpp:10:10: note: ‘std::ofstream g’ previously declared here ofstream g("interclasare.out"); ^ user.cpp:148:5: error: redefinition of ‘int n’ int n, m, r[20005], l1, l2; ^ user.cpp:12:5: note: ‘int n’ previously declared here int n, m, r[20005], l1, l2; ^ user.cpp:148:8: error: redefinition of ‘int m’ int n, m, r[20005], l1, l2; ^ user.cpp:12:8: note: ‘int m’ previously declared here int n, m, r[20005], l1, l2; ^ user.cpp:148:18: error: redefinition of ‘int r [20005]’ int n, m, r[20005], l1, l2; ^ user.cpp:12:11: note: ‘int r [20005]’ previously declared here int n, m, r[20005], l1, l2; ^ user.cpp:148:21: error: redefinition of ‘int l1’ int n, m, r[20005], l1, l2; ^~ user.cpp:12:21: note: ‘int l1’ previously declared here int n, m, r[20005], l1, l2; ^~ user.cpp:148:25: error: redefinition of ‘int l2’ int n, m, r[20005], l1, l2; ^~ user.cpp:12:25: note: ‘int l2’ previously declared here int n, m, r[20005], l1, l2; ^~ user.cpp:150:13: error: redefinition of ‘std::vector<int> a’ vector<int> a, b; ^