1 // project : 3106 2 // file name : main.cpp 3 4 #include <iostream> 5 using namespace std; 6 7 #define SPACE 32 8 9 int main() 10 { 11 int n; 12 while (cin >> n && n) 13 { 14 string str; 15 int s_time, j_time, b_time; 16 17 // input data 18 cin >> str; 19 cin >> s_time >> j_time >> b_time; 20 21 int score = 0; 22 23 /* 争取赢 */ 24 /* 石头 kill 剪刀 */ 25 for (int i = 0; i < n; i++) 26 { 27 if (str[i] == 'J' && s_time > 0) 28 { 29 str[i] = SPACE; 30 s_time--; 31 score++; 32 } 33 } 34 /* 剪刀 kill 布 */ 35 for (int i = 0; i < n; i++) 36 { 37 if (str[i] == 'B' && j_time > 0) 38 { 39 str[i] = SPACE; 40 j_time--; 41 score++; 42 } 43 } 44 /* 布 kill 石头 */ 45 for (int i = 0; i < n; i++) 46 { 47 if (str[i] == 'S' && b_time > 0) 48 { 49 str[i] = SPACE; 50 b_time--; 51 score++; 52 } 53 } 54 55 /* 争取平局 */ 56 /* 石头 */ 57 for (int i = 0; i < n; i++) 58 { 59 if (str[i] == 'S' && s_time > 0) 60 { 61 str[i] == SPACE; 62 s_time--; 63 } 64 } 65 /* 剪刀 */ 66 for (int i = 0; i < n; i++) 67 { 68 if (str[i] == 'J' && j_time > 0) 69 { 70 str[i] == SPACE; 71 j_time--; 72 } 73 } 74 /* 布 */ 75 for (int i = 0; i < n; i++) 76 { 77 if (str[i] == 'b' && b_time > 0) 78 { 79 str[i] == SPACE; 80 b_time--; 81 } 82 } 83 84 /* 只能被kill咯 */ 85 /* 剪刀 kill 石头 */ 86 for (int i = 0; i < n; i++) 87 { 88 if (str[i] == 'S' && j_time > 0) 89 { 90 str[i] = SPACE; 91 j_time--; 92 score--; 93 } 94 } 95 /* 布 kill 剪刀 */ 96 for (int i = 0; i < n; i++) 97 { 98 if (str[i] == 'J' && b_time > 0) 99 { 100 str[i] = SPACE; 101 b_time--; 102 score--; 103 } 104 } 105 /* 石头 kill 布 */ 106 for (int i = 0; i < n; i++) 107 { 108 if (str[i] == 'B' && s_time > 0) 109 { 110 str[i] = SPACE; 111 s_time--; 112 score--; 113 } 114 } 115 116 cout << score << endl; 117 118 } 119 120 return 0; 121 } 122 // end 123 // ism