Description A math instructor is too lazy to grade a question in the exam papers in which students are supposed to produce a complicated formula for the question asked. Students may write correct answers in different forms which makes grading very ha
Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 3721 Accepted: 1290 Description A math instructor is too lazy to grade a question in the exam papers in which students are supposed to produce a complicated formula for the question ask
Long Long Message Description The little cat is majoring in physics in the capital of Byterland. A piece of sad news comes to him these days: his mother is getting ill. Being worried about spending so much on railway tickets (Byterland is such a bi