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#include<cstdio>
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using namespace std;
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int main()
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{
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int a=202;
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double b=2323.34345;
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//printf("a=%d\n",a);
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//printf("2*a=%d\n",2*a);
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//printf("a=%2d\n",a);
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printf("%3lf\n",b);
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printf("%20.2lf\n",b);
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printf("%-20.2lf\n",b);
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printf("%.21f\n",b);
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return 0;
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}
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