Poj 1789 Truck History
作者:互联网
题意就是一堆字符串,每个点之间的距离就是字符串不同的字母个数,字符串长度都是7
把不同字符个数存到图里面,然后用prim算法就行
poj放不下map[2001][2001],所以放到全局区
#include<iostream> #include<string> using namespace std; int map[2001][2001] = { 0 }; int main() { int n; while (cin >> n) { if (n == 0) { break; } string str[2001]; for (int i = 0; i < n; i++) { cin >> str[i]; } for (int i = 0; i < n; i++) { for (int j = i + 1; j < n; j++) { int t = 0; for (int k = 0; k < 7; k++) { if (str[i][k] != str[j][k]) t++; } map[i][j] = map[j][i] = t; } } int sum = 0; int pos[2001] = { 0 }; int book[2001] = { 0 }; for (int i = 0; i < n; i++) { pos[i] = map[0][i]; } book[0] = 1; for (int k = 1; k < n; k++) { int min = 99999999; int t = 0; for (int i = 0; i < n; i++) { if (pos[i] < min && book[i] == 0) { min = pos[i]; t = i; } } if (t == 0) { break; } sum += min; book[t] = 1; for (int i = 0; i < n; i++) { if (map[t][i] < pos[i] && book[i] == 0) { pos[i] = map[t][i]; } } } cout << "The highest possible quality is 1/" << sum << '.' << endl; } return 0; }
标签:1789,map,int,pos,++,2001,Poj,Truck,book 来源: https://www.cnblogs.com/Vetsama/p/12234912.html