View Compilation Error

0_0_17250927_16274.cpp: In function 'int main()':
0_0_17250927_16274.cpp:36:76: error: no context to resolve type of 'a[i].std::vector<_Tp, _Alloc>::clear<int, std::allocator<int> >'
   for (int i = 1; i <= n; ++i)scanf("%lld", &s[i]), s[i] += s[i - 1], a[i].clear, cnt[i] = 0;
                                                                            ^