Eroare de compilare: main.cpp:14:1: error: 'vector' does not name a type vector < pair <int, int> > pairs; ^~~~~~ main.cpp: In function 'int main()': main.cpp:30:13: error: 'pairs' was not declared in this scope pairs.push_back({a[j], a[i]}); ^~~~~ main.cpp:34:9: error: 'pairs' was not declared in this scope pairs.push_back({0, 0}); ^~~~~ main.cpp:38:50: error: 'pairs' was not declared in this scope ans[N - i] = ans[N - i + 1] - 1LL * (pairs.back().first - pairs.back().second); ^~~~~ Non zero exit status: 1