function total(n: number) { const tne = Math.floor((n + 1) / 2); const neq = 4*tne + 4 * tne * (tne - 1); const te = Math.floor((n) / 2); const eq = 1 + 8 * te + 4 * te *(te - 1) return { neq, eq } } const { eq, neq } = total(202300 - 1); console.log(eq, neq); const fullfill_even = 7769; const fullfill_odd = 7780; const fullfills = fullfill_even * eq + fullfill_odd * neq; console.log("inner",fullfills); const corner = 5965 + 5947 + 5951+ 5933; // // const corner = 5866 + 5853 + 5859 + 5846; console.log("corner",corner) const big_edge = 6874+6871+6853+6860; const small_edge = 1052+1059+1041+1038; // const small_edge = ; const edge = (202300 - 1) * big_edge + 202300 * small_edge; console.log("edge",edge); console.log("sum", fullfills + corner + edge) // Too high: 636353717599990 // Too high: 636353676128237 // Too high: 636353671677626 // Not Correct: 636350593267107