这道题最好用字典做！！

#include <iostream>
#include <string>
#include <map>
using namespace std;
int main(){
    ios::sync_with_stdio(false); //输入输出加速
    map<char, char> mapKeyboard; 
    long long iLength, i; 
    string sInput, sAns; 
    mapKeyboard['Q'] = 'Q';
    mapKeyboard['W'] = 'Q';
    mapKeyboard['E'] = 'W';
    mapKeyboard['R'] = 'E';
    mapKeyboard['T'] = 'R';
    mapKeyboard['Y'] = 'T';
    mapKeyboard['U'] = 'Y';
    mapKeyboard['I'] = 'U';
    mapKeyboard['O'] = 'I';
    mapKeyboard['P'] = 'O';
    mapKeyboard['['] = 'P';
    mapKeyboard[']'] = '[';
    mapKeyboard['A'] = 'A';
    mapKeyboard['S'] = 'A';
    mapKeyboard['D'] = 'S';
    mapKeyboard['F'] = 'D';
    mapKeyboard['G'] = 'F';
    mapKeyboard['H'] = 'G';
    mapKeyboard['J'] = 'H';
    mapKeyboard['K'] = 'J';
    mapKeyboard['L'] = 'K';
    mapKeyboard[';'] = 'L';
    mapKeyboard['\''] = ';';
    mapKeyboard['Z'] = 'Z';
    mapKeyboard['X'] = 'Z';
    mapKeyboard['C'] = 'X';
    mapKeyboard['V'] = 'C';
    mapKeyboard['B'] = 'V';
    mapKeyboard['N'] = 'B';
    mapKeyboard['M'] = 'N';
    mapKeyboard[','] = 'M';
    mapKeyboard['.'] = ',';
    mapKeyboard['/'] = '.';
    mapKeyboard['\\']=']';
    mapKeyboard[' '] = ' ';
    mapKeyboard['`'] = '`';
    mapKeyboard['1'] = '`';
    mapKeyboard['2'] = '1';
    mapKeyboard['3'] = '2';
    mapKeyboard['4'] = '3';
    mapKeyboard['5'] = '4';
    mapKeyboard['6'] = '5';
    mapKeyboard['7'] = '6';
    mapKeyboard['8'] = '7';
    mapKeyboard['9'] = '8';
    mapKeyboard['0'] = '9';
    mapKeyboard['-'] = '0';
    mapKeyboard['='] = '-'; 
    while (getline(cin, sInput)){ 
        iLength = sInput.length(); 
        for (i = 0; i < iLength; ++i){ 
            sAns += mapKeyboard[sInput[i]]; //向答案串中按照对应关系添加字符
        }
        cout << sAns << endl; 
        sAns = ""; 
    }
    return 0; 
}