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// Your Problem: // This is problem J5: Unfriend of 2011 // The problem's instructions are at // http://www.cemc.uwaterloo.ca/contests/computing/2011/stage1/juniorEn.pdf // // This problem's difficulty is 3/5 // // Credits: // The problem is provided by Waterloo CEMC, and the tests are provided by // Waterloo CEMC as well as http://mmhs.ca/ccc // // Good Luck. // Do not modify anything outside of the function or the function itself. // CODE START // YOUR CLASS NAME MUST BE `main` // CODE END // Press Ctrl+E (Command+E on mac) to test your code