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#include <bits/stdc++.h>
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using namespace std;
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//<2F><>һ<EFBFBD><D2BB>16<31><36><EFBFBD>ƵĻҽ<C4BB>תΪһ<CEAA><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>±<EFBFBD><C2B1><EFBFBD><EFBFBD><EFBFBD>ֵ
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int toDec(char a, char b) {
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int res = 0;
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if (a >= 'A' && a <= 'F')
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res += (a - 'A' + 10) * 16;
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else
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res += (a - '0') * 16;
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if (b >= 'A' && b <= 'F')
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res += b - 'A' + 10;
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else
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res += b - '0';
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return res;
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}
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//<2F><>һ<EFBFBD><D2BB>ʮ<EFBFBD><CAAE><EFBFBD>ƵĻҽ<C4BB>ֵ[0,255]ת<><D7AA><EFBFBD><EFBFBD>ʮ<EFBFBD><CAAE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>[0,FF]
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string toHex(int x) {
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int a = x % 16; // 0 ~ 15
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int b = x / 16; //
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char c1;
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if (a >= 10)
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c1 = 'A' + a - 10;
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else
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c1 = '0' + a;
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char c2;
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if (b >= 10)
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c2 = 'A' + b - 10;
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else
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c2 = '0' + b;
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string res;
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res.push_back(c2);
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res.push_back(c1);
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return res;
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}
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int main() {
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cout << toDec('A', 'B') << endl; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>171<37><31><EFBFBD>ֹ<EFBFBD><D6B9><EFBFBD><EFBFBD><EFBFBD>10*16+11=171
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cout << toDec('1', '2') << endl; //18
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cout << toDec('0', '2') << endl; //2
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cout << toHex(171) << endl;
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cout << toHex(18) << endl;
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cout << toHex(2) << endl;
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return 0;
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}
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