ZOJ 1387 Decoding Morse Sequences
水动规= =
1 #include <cstdio> 2 #include <cstring> 3 #include <cstdlib> 4 5 const int MAXN = 10010; 6 const char dic[26][10] = 7 { 8 ".-", "-...", "-.-.", "-..", 9 ".", "..-.", "--.", "....", 10 "..", ".---", "-.-", ".-..", 11 "--", "-.", "---", ".--.", 12 "--.-", ".-.", "...", "-", 13 "..-", "...-", ".--", "-..-", 14 "-.--", "--.." 15 }; 16 17 char str[MAXN]; 18 char morse[MAXN][110]; 19 int diclen[26]; 20 int dp[MAXN]; 21 int N; 22 23 void init() 24 { 25 for ( int i = 0; i < 26; ++i ) 26 diclen[i] = strlen( dic[i] ); 27 return; 28 } 29 30 void DP() 31 { 32 int len = strlen( &str[1] ); 33 memset( dp, 0, sizeof(dp) ); 34 dp[0] = 1; 35 for ( int i = 1; i <= len; ++i ) 36 for ( int j = 0; j < N; ++j ) 37 { 38 bool ok = true; 39 int k; 40 //printf( "morse[%d]=%s\n", j, morse[j] ); 41 for ( k = 0; morse[j][k]; ++k ) 42 if ( str[i + k] != morse[j][k] ) 43 { 44 ok = false; 45 break; 46 } 47 if ( ok ) dp[ i + k - 1 ] += dp[i - 1]; 48 } 49 //for ( int i = 0; i <= len; ++i ) printf( "dp[%d] = %d\n", i, dp[i] ); 50 51 printf( "%d\n", dp[len] ); 52 return; 53 } 54 55 int main() 56 { 57 init(); 58 59 int T; 60 scanf( "%d", &T ); 61 while ( T-- ) 62 { 63 scanf( "%s", &str[1] ); 64 scanf( "%d", &N ); 65 for ( int i = 0; i < N; ++i ) 66 { 67 char temp[24]; 68 scanf( "%s", temp ); 69 int lenn = 0; 70 for ( int j = 0; temp[j]; ++j ) 71 { 72 strcpy( &morse[i][lenn], dic[ temp[j] - 'A' ] ); 73 lenn += diclen[ temp[j] - 'A' ]; 74 } 75 morse[i][lenn] = '\0'; 76 //puts( morse[i] ); 77 } 78 DP(); 79 } 80 return 0; 81 }
