#pragma GCC target("avx2") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #include #include #include constexpr unsigned B = 10; int main() { unsigned N, Q; std::scanf("%u %u", &N, &Q); std::vector A(N); for (auto &x: A) { std::scanf("%u", &x); } const unsigned Size = N / B; std::vector>> memo(Size, std::vector>(Size)); for (unsigned i = 0; i < Size; ++i) { memo[i][i].set(0); for (unsigned j = i + 1; j < Size; ++j) { memo[i][j] |= memo[i][j - 1]; for (unsigned k = B * (j - 1); k < B * j; ++k) { memo[i][j] |= memo[i][j] << A[k]; } } } while (Q--) { unsigned l, r, k; std::scanf("%u %u %u", &l, &r, &k); l -= 1; if (r - l <= B * 2) { std::bitset<5001> dp; dp.set(0); for (unsigned i = l; i < r; ++i) { dp |= dp << A[i]; } if (dp.test(k)) { std::puts("Yes"); } else { std::puts("No"); } } else { r -= 1; const unsigned lk = (l + B - 1) / B; const unsigned rk = r / B; auto dp = memo[lk][rk]; for (unsigned k = l; k < B * lk; ++k) { dp |= dp << A[k]; } for (unsigned k = B * rk; k <= r; ++k) { dp |= dp << A[k]; } if (dp.test(k)) { std::puts("Yes"); } else { std::puts("No"); } } } }