function Main(input) { input = input.split(" "); if (!(input[0] && input[1] && input[0] >= 1 && input[1] <= 31)) return false; if (input[0] > 0) input[0] = parseInt(input[0]) - 1; input[1] = parseInt(input[1]); const targetEventDates = [23, 24, 25], monthlyDateRange = Array.from({length: 31}, (v, k) => k+1), scheduledDateRange = Array.prototype.slice.apply(monthlyDateRange, input); let invalidCount = 0; scheduledDateRange.forEach(function(dr){ if (targetEventDates.indexOf(dr) !== -1) invalidCount++; }); console.log(invalidCount); } //*この行以降は編集しないでください(標準入出力から一度に読み込み、Mainを呼び出します) Main(require("fs").readFileSync("/dev/stdin", "utf8"));