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123

CXXIII

#include
   
    int main(){    int num;    char *units_digit[10]={"","I","II","III","IV","V","VI","VII","VIII","IX"};    char *tens_digit[10]={"","X","XX","XXX","XL","L","LX","LXX","LXXX","XC"};    char *hundreds_digit[10]={"","C","CC","CCC","CD","D","DC","DCC","DCCC","CM"};    char *thousand_digit[4]={"","M","MM","MMM"};    scanf("%d",&num);    printf("%s",thousand_digit[num/1000]);    printf("%s",hundreds_digit[num%1000/100]);    printf("%s",tens_digit[num%100/10]);    printf("%s",units_digit[num%10]);    return 0;}
   

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