15:{"metadata":[["$","title","0",{"children":"Au reservoir (#2151) - Basecamp"}],["$","meta","1",{"name":"description","content":"Consider a polygonal chain. Its coordinates (x_1, y_1), (x_2, y_2), (x_3, y_3), …, (x_N, y_N) satisfy inequalities x_1 < x_2 < x_3 < … < x_N and y_i ≠ y_{i+1} for all i. Let’s draw rays upward from the leftmost (x_1, y_1) and the rightmost (x_N, y_N) vertices. Then let’s transform the plane figure into three-dimensional body with constant thickness of 1."}],["$","meta","2",{"property":"og:title","content":"Au reservoir"}],["$","meta","3",{"property":"og:description","content":"Consider a polygonal chain. Its coordinates (x_1, y_1), (x_2, y_2), (x_3, y_3), …, (x_N, y_N) satisfy inequalities x_1 < x_2 < x_3 < … < x_N and y_i ≠ y_{i+1} for all i. Let’s draw rays upward from the leftmost (x_1, y_1) and the rightmost (x_N, y_N) vertices. Then let’s transform the plane figure into three-dimensional body with constant thickness of 1."}],["$","meta","4",{"property":"og:image","content":"https://static.e-olymp.com/content/df/df62483182e53a9d5a61d2f158cc6038dcce0582.jpg"}],["$","meta","5",{"name":"twitter:card","content":"summary_large_image"}],["$","meta","6",{"name":"twitter:title","content":"Au reservoir"}],["$","meta","7",{"name":"twitter:description","content":"Consider a polygonal chain. Its coordinates (x_1, y_1), (x_2, y_2), (x_3, y_3), …, (x_N, y_N) satisfy inequalities x_1 < x_2 < x_3 < … < x_N and y_i ≠ y_{i+1} for all i. Let’s draw rays upward from the leftmost (x_1, y_1) and the rightmost (x_N, y_N) vertices. Then let’s transform the plane figure into three-dimensional body with constant thickness of 1."}],["$","meta","8",{"name":"twitter:image","content":"https://static.e-olymp.com/content/df/df62483182e53a9d5a61d2f158cc6038dcce0582.jpg"}]],"error":null,"digest":"$undefined"} f:{"metadata":"$15:metadata","error":null,"digest":"$undefined"}