"Hdoj" 3183 A Magic Lamp

RMQ.

1 /*3183*/2#include <cstdio>3#include <cstring>4#include <cstdlib>5 6 #defineMAXN 10057 8 CharS[MAXN], ANS[MAXN];9 intDP[MAXN][MAXN];Ten intn,len,m; One  A intMinintXinty) { -     returnS[x]<=s[y]?x:y; - } the  - voidRmq_init () { -     intI, J, K; -      +      for(i=0; i<len; ++i) -dp[i][0] =i; +      for(j=1; (1&LT;&LT;J) <len; ++j) A          for(i=0; i+ (1&LT;&LT;J)-1<len; ++i) atDp[i][j] = min (dp[i][j-1], dp[i+ (1<< (J-1))][j-1]); - } -  - intRMQ (intLintr) { -     intK =0; -      in      while((1<< (k +1)) <= r-l+1) -++K; to     returnMin (Dp[l][k], dp[r-(1&LT;&LT;K) +1][k]); + } -  the intMain () { *     intI, J, K; $     intl;Panax Notoginseng      - #ifndef Online_judge theFreopen ("data.in","R", stdin); +Freopen ("Data.out","W", stdout); A     #endif the      +      while(SCANF ("%s%d", S, &m)! =EOF) { -Len =strlen (s); $ rmq_init (); $m = Len-m; -L = k =0; -          while(m--) { theK = RMQ (k, len-m-1); -ans[l++] = s[k++];Wuyi         } the          for(i=0; i<l; ++i) -             if(Ans[i]! ='0') Wu                  Break; -ANS[L] =' /'; About         if(i = =l) $Puts"0"); -         Else -Puts (ans+i); -     } A      +     return 0; the}

"Hdoj" 3183 A Magic Lamp