USACO 1.2 Name That Number
这个题真是无聊，今天做完CF，就在整这个题。。。开始理解错了题意了，发现给了一个文件的字典，文件的读入读出，早忘的差不多了，读出只能把一个字典，读成一个字符串，写了好长时间，改了N处，终于过了。。。做CF被虐爆，做这个更是被虐爆了。。。
1 /* 2 ID: cuizhe 3 LANG: C++ 4 TASK: namenum 5 */ 6 #include <iostream> 7 #include <cstdio> 8 #include <cstring> 9 #include <cstdlib> 10 #include <map> 11 using namespace std; 12 char txt[10000000]; 13 map<char,int>mm; 14 long long o[13]; 15 int main() 16 { 17 int len,str,i,j,z; 18 long long n,sum; 19 FILE *fp; 20 char *q = txt; 21 freopen("namenum.in","r",stdin); 22 fp = fopen("dict.txt","r"); 23 scanf("%lld",&n); 24 freopen("namenum.out","w",stdout); 25 fread(q,sizeof(txt),1,fp); 26 len = strlen(txt); 27 mm['A'] = 2; 28 mm['B'] = 2; 29 mm['C'] = 2; 30 mm['D'] = 3; 31 mm['E'] = 3; 32 mm['F'] = 3; 33 mm['G'] = 4; 34 mm['H'] = 4; 35 mm['I'] = 4; 36 mm['J'] = 5; 37 mm['K'] = 5; 38 mm['L'] = 5; 39 mm['M'] = 6; 40 mm['N'] = 6; 41 mm['O'] = 6; 42 mm['P'] = 7; 43 mm['R'] = 7; 44 mm['S'] = 7; 45 mm['T'] = 8; 46 mm['U'] = 8; 47 mm['V'] = 8; 48 mm['W'] = 9; 49 mm['X'] = 9; 50 mm['Y'] = 9; 51 str = 0; 52 z = 1; 53 o[1] = 1; 54 for(i = 2; i <= 12; i ++) 55 o[i] = o[i-1]*10; 56 for(i = 0; i <= len; i ++) 57 { 58 if(txt[i] == '\n') 59 { 60 sum = 0; 61 for(j = str; j <= i-1; j ++) 62 { 63 sum += mm[txt[j]]*o[i-j]; 64 } 65 if(sum == n) 66 { 67 for(j = str; j <= i-1; j ++) 68 printf("%c",txt[j]); 69 printf("\n"); 70 z = 0; 71 } 72 str = i+1; 73 } 74 } 75 if(z) 76 printf("NONE\n"); 77 return 0; 78 }
