A 35-year-old patient complains of burns of the face and neck, swelling and burning pain in the affected area. On examination: edema of the face and neck, palpebral fissure is narrowed due to swelling, affected skin is hyperemic and covered with strained thin-walled blisters filled with clear content. Where blisters are broken, there are pink wounds, sharply painful to touch. Determine the degree of the burns: