1、396 x 45 = ?𰸾 36 * 495 = 396 * 45 = 17820 27 * 594 = 297 * 54 a b c d e 1950 ab * cde = adb * ce static int kinds = 0; static int a = new int6; static boolean vis = new boolean10; static void check(int a) int num1 = a1 * 10 + a2; int num2 = a3 * 100 + a4 * 10 + a5; int num3 = a1 * 100 + a4 *
2、 10 + a2; int num4 = a3 * 10 + a5; if (num1 * num2 = num3 * num4) kinds+; static void dfs(int start, int n) if (start = 6) check(a); else for (int i = 1; i n; i+) if (visi) continue; astart = i; visi = true; dfs(start + 1, n); visi = false; dfs(1, 10); System.out.println(kinds); /* p1.jpg * * * 仰 cl
3、ass Node int x, y; public Node(int xx, int yy) x = xx; y = yy; static int kinds = 0, dir = 0, 1 , 1, 0 ; static Node aim = new Node8; static boolean vis = new boolean45; if (start = n) else Node pre = aimstart; for (int i = 0; 2; int x = pre.x + diri0; int y = pre.y + diri1; if (x 4 & y 5 & !visxy)
4、visxy = true; aimstart + 1 = new Node(x, y); dfs(start + 1, n); visxy = false; aim0 = new Node(0, 0); dfs(0, 7); System.out.println(kinds); /* * : 0.61803. 糣! 1 = - 1 1 + - 1 1 + - 1 1 + - 1 + . 100 30.618 40.6180 50.61803 70.6180340 0粻 100 0 import java.math.BigDecimal; BigDecimal one, an
5、s; ans = one = BigDecimal.ONE; for (int i = 0; 1000; ans = one.add(ans); ans = one.divide(ans, 200, BigDecimal.ROUND_HALF_UP); System.out.println(ans); System.out.println(ans.setScale(100, BigDecimal.ROUND_HALF_UP); * 粢 IDID絫ID IDIDID IDID N(N100)N100100000ID 1m nmIDnID 2 5 6 8 11 9 10 12 9 7 9 6 16
6、4 178 108 109 180 155 141 159 104 182 179 118 137 184 115 124 125 129 168 196172 189 127 107 112 192 103 131 133 169 158 128 102 110 148 139 157 140 195 197185 152 135 106 123 173 122 136 174 191 145 116 151 143 175 120 161 134 162 190149 138 142 146 199 126 165 156 153 193 144 166 170 121 171 132 1
7、01 194 187 188113 130 176 154 177 120 117 150 114 183 186 181 100 163 160 167 147 198 111 119 105 120 64MCPU 2000ms import java.util.Scanner; static int hash = new int100001; Scanner cin = new Scanner(System.in); int N = cin.nextInt(); int min = 100001, max = -1; int m = 0, n = 0; String strLine = c
8、in.nextLine();/ n while (N- != 0) strLine = cin.nextLine(); Scanner s = new Scanner(strLine); while (s.hasNextInt() int t = s.nextInt(); min = Math.min(t, min); max = Math.max(t, max); hasht+; for (int i = min;= max; if (hashi = 0) m = i; if (hashi = 2) n = i; System.out.println(m + + n); * 11,2,3,4
9、,5,6,. 1 22 1 _ 3 _ 5 _ 7 _ 9 . 1 3 5 7 9 . 3233! 511, 17, . 737(19,39,.) 1, 3, 7, 9, 13, 15, 21, 25, 31, 33, 37, 43, 49, 51, 63, 67, 69, 73, 75, 79, . m n, (m n 1000*1000) mnmn 1 205 30 698 static int a = new int500000 + 1; static void lucky(int start, int a, int len) int k = start, num = astart; f
10、or (int i = k; len; i+) if (i % num != 0) ak+ = ai; if (num = n | ai = ai - 1) break; m & ai n) kinds+; /* * 100 100 = 3 + 69258 / 714 100 = 82 + 3546 / 197 190 100 11 N (N1000*1000)19 100 11 105 6 static int a = new int10; static boolean vis = new boolean10;/ static int sum(int start, int end) int
11、sum = 0; for (int i = start; end; sum = sum * 10 + ai + 1; return sum; static void check(int a, int n, int num) int begin = 1, temp = num; while (temp = temp / 10) ! begin+; for (int k = 1; k = num) return;/ for (int j = k + (n - k) / 2; j num3 & num2 % num3 = 0 & num = num1 + num2 / num3) kinds+; s
12、tatic void dfs(int start, int n, int num) if (start = n) check(a, n, num); i+)/ dfs(start + 1, n, num); public static void main(String args) int num = cin.nextInt(); long start = System.currentTimeMillis(); dfs(1, 10, num); long end = System.currentTimeMillis(); / System.out.println(end-start);/ * 1
13、N L, R LRR-L+1 N𰸪Nİ N (1 = N = 50000), NPi(1 = Pi = N) N 4 3 2 4 1 7 5 3 4 2 5 1 9 7 1,1, 1,2, 1,3, 1,4, 2,2, 3,3, 4,4 9 1,1, 1,2, 1,3, 1,4, 1,5, 2,2, 3,3, 4,4, 5,5 static void lianhao(int a) a.length; int min = ai; int max = ai; for (int j = i; j+) min = Math.min(min, aj); max = Math.max(max, aj); if (max - min = j - i) int a = new intn + 1;= n; ai = cin.nextInt(); lianhao(a);
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