first commit

2018-10-20 23:27:07 +08:00
commit 25e4d62575
11 changed files with 594 additions and 0 deletions
--- a/2010-06-09/10015.cpp
+++ b/2010-06-09/10015.cpp
@ -0,0 +1,97 @@
+/*
+date:107/10/13
+author:Chen Yi Jing
+
+人圍成圈，用質數去繞圈，質數數完被點到的人會被殺掉，求最後倖存者
+1. TLE
+*/
+#include <iostream>
+using namespace std;
+
+int main() {
+    //將前 3500 個質數都算出來
+    int p[3502] = {0};
+    int number = 4;
+    int index = 3;
+
+    p[1] = 2;
+    p[2] = 3;
+
+    while (p[3501] == 0) {
+        for (int i = 2; i < number / 2 + 1; i++) {
+            if(number % i == 0) {
+                break;
+            }
+            if(i == number / 2) {
+                p[index] = number;
+                index++;
+            }
+        }
+        number++;
+    }
+    
+
+    //輸入的部份
+    int n = 0;
+    int copy_n = 0;
+    
+    while(cin >> n) {
+        copy_n = n;
+
+        int point = 0;  //用來看現在數到哪個人
+        int counter = 0; //用來倒數質數的
+        int num[n + 1]; //某人是否存活　１：活　０：死
+
+        //初始化為 1
+        for (int k = 0; k <= n; k++) {
+            num[k] = 1;
+        }
+
+        if (n == 0)
+            break;
+
+        while (n > 1) {   // 存活人數 > 一人
+            for (int i = 1; i < 3501; i++) {
+                if (p[i] % n !=  0) {
+                    counter = p[i] % n; //如果質數相對人數很大取餘數就好
+                }
+                else {
+                    counter = n;
+                }
+                
+                // cout << "質數　" << counter << endl;
+                while (counter > 0) {
+                    if (point == copy_n) {
+                        point = 0;
+                    }
+                    if (num[point + 1] == 1) { 
+                        counter--;
+                        point++;
+                    }
+                    else {
+                        point++;
+                    }
+
+                    if (counter == 0) {
+                        num[point] = 0;  //第 point 人被殺
+                        n = n - 1;  //總人數少 1
+                        // cout << "人數　" << n << endl;
+                    }
+                }
+                // cout << "被殺　" << point << endl;
+                // cout <<"---------------"<< endl;
+                if (n == 1)
+                    break;
+            }
+            //輸出最後倖存者
+            if (n == 1) {   
+                for (int i = 1; i <= copy_n; i++) {
+                    if (num[i] == 1) 
+                        cout << i << endl;
+                }
+            }
+            
+        }
+    }
+    cout << endl;
+}