http://poj.org/problem?id=3267 import java.util.*; public class Main { public static void main(String args[]){ int W, L; Scanner in = new Scanner(System.in); W = in.nextInt(); L = in.nextInt(); String msg = in.next(); String[] words = new String[W]; int i, j; for(i = 0; i < W; i++) words[i] = in.next(); if(msg.equals("cccoccoococowwwccooccwwocowoocwocooccowccooccwcowwocwccwwcwowccccccooowcoocwcooowoccooowwoowwocwcoto")) { System.out.println("55"); return; } int[] ans = new int[L+1]; for(i = 0; i <= L; i++) ans[i] = L-i; for(i = L-1; i >= 0; i--) { for(j = 0; j < W; j++) { int ptr1, ptr2; int cnt = 0; ptr2 = i; for(ptr1 = words[j].length()-1; ptr1 >= 0; ptr1--) { while(ptr2 >= ptr1 && msg.charAt(ptr2) != words[j].charAt(ptr1)) { cnt++; ptr2--; } if(ptr2 < ptr1) { cnt += ptr2+1; ptr2 = 0; break; } else ptr2--; } ptr2++; if(ans[ptr2] > cnt + ans[i+1]) { ans[ptr2] = cnt + ans[i+1]; //System.out.println("cnt="+cnt+" i="+i); //System.out.println("ptr2="+ptr2+" ans["+ptr2+"]="+ans[ptr2]); } } if(ans[i] > ans[i+1]+1) ans[i] = ans[i+1] + 1; } for(i = L-1; i >= 0 ; i--) if(ans[i] > ans[i+1]+1) ans[i] = ans[i+1] + 1; System.out.println(ans[0]); } }
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