Var s: string; a, b: integer; begin readln(s); if s[1] = 'x' then begin a := StrToInt(s[3]); b := StrToInt(s[5]); if s[2] = '-' then a := -a; writeln(b - a); end else if s[3] = 'x' then begin a := StrToInt(s[1]); b := StrToInt(s[5]); if s[2] = '-' then begin a := -a; b := -b; end; writeln(b - a); end else if s[5] = 'x' then begin a := StrToInt(s[1]); b := StrToInt(s[3]); if s[2] = '-' then b := -b; writeln(a + b); end end.
учтите что никакой защиты от дурака или неверного ввода
public static void main(String[] args) throws java.io.IOException{
int c, n = 0, array[];
while((c = System.in.read())==13 || (47<c && c<58 && (n = n*10+c-48)>-1));
if(25<n || c!=10)return;
array = new int[n];
for(c = 0; c<n; c++){
int d = 0; boolean negative = false;
while((d = System.in.read())!=10)
if(47<d && d<58)array[c] = array[c]*10+d-48;
else if(d==45)negative = true;
if(negative)array[c]*=-1;
}
sortArray(array);
for(c = 0; c<n; c++)System.out.print(array[c]+" ");
}
private static void sortArray(int[] array){
for(int c = 0; c<array.length-1; c++){
int b = c, e;
for(int d = c+1; d<array.length; d++)
if(array[d]>array[b])b=d;
e = array[c];
array[c] = array[b];
array[b] = e;
}
}
}