1.3 Arithmetic expressions and sequential execution of programming basics

Brush water problem, brush water problem

portal:http://noi.openjudge.cn/ch0103/

A+b

*c (A+B)

(a+b)/C

04 with remainder Division

05 floating-point values for the calculation of fractions

It's all about seeing the test instructions can read.

#include <iostream>#include<cstring>#include<cstdio>using  namespace  std; int Main () {    int A, b;    CIN>>a>>b;    cout<<a+b;     return 0 ;}

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#include <iostream>#include<cstring>#include<cstdio>using  namespace  std; int Main () {int  a,b,c;cin>>a>>b>>c;cout<< (a+b) *C;     return0;}

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#include <iostream>#include<cstring>#include<cstdio>using  namespace  std; int Main () {int  a,b,c;cin>>a>>b>>c;cout<< (a+b)/C;     return0;}

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#include <iostream>#include<cstring>#include<cstdio>using  namespace  std; int Main () {int  a,b;cin>>a>>b;cout<<a/b<<' '<<a%b;     return 0 ;}

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#include <iostream>#include<cstring>#include<cstdio>using  namespace  std; int Main () {double  a,b;cin>>a>>b;printf ("%.9lf ", A/b)    ; return 0 ;}

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http://noi.openjudge.cn/ch0103/06/

Unexpected gain: output% can be used with printf ("percent"); 233 then the output "can use printf (" ""); 233

07 Calculating the value of a polynomial

#include <iostream>#include<cstring>#include<cstdio>using  namespace  std; int Main () {double  a,b,c,d,x;cin>>x>>a>>b>>c>>d;printf (  "%.7lf", a*x*x*x+b*x*x+c*x+D);     return 0 ;}

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Actually, just use the POW better?

How about a few days to get a quick polynomial division trial?

08-20

Water problem, a little bit of pit

Direct Sticker Code

#include <iostream>#include<cstring>#include<cstdio>using  namespace  std; int Main () {double  f;cin>>f;printf ("%.5lf" ,5* (f-a)/9)    ; return 0 ;}

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 #include <iostream> #include  <cstring>  #include  <cstdio>using  namespace   Std;  int   Main () { double   R;cin  >>r;printf (  " %.4lf%.4lf%.4lf  " , R*2 , R*2  *3.14159 , R*r*3.14159  );  return  0  ;}  

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#include <iostream>#include<cstring>#include<cstdio>using  namespace  std; int Main () {float  r1,r2;cin>>r1>>r2;printf ("%.2LF  ",1/(1/r1+1/R2));     return 0 ;}

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#include <iostream>#include<cstring>#include<cstdio>using  namespace  std; int Main () {double  a,b;cin>>a>>b; int c;c=a/b;printf ("%g", a-b*c);     return 0 ;}

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#include <iostream>#include<cstring>#include<cstdio>using  namespace  std; int Main () {double  r;cin>>r;printf ("%.2lf" ,3.14*r*r*r*4/3);     return 0 ;}

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#include <iostream>#include<cstring>#include<cstdio>using  namespace  std; int Main () {int  n;cin>>n;cout<<n%<< (n/10 )%<<n/; return 0 ;}

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#include <iostream>#include<cstdio>usingnamespace  std; int Main () {    int  v,h,r;    CIN>>h>>R;    V=h*r*r*3.14;    cout<<20000/v+1;     return 0 ;}

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#include <iostream>#include<cstdio>#include<cmath>using  namespace  std; int Main () {    double  xa,ya,xb,yb;    CIN>>xa>>xb>>ya>>YB;    printf ("%.3lf", sqrt ((Xa-ya) * (Xa-ya) + (XB-YB) * (xb-YB));     return 0 ;}

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#include <iostream>#include<cstdio>#include<cmath>using namespacestd;intMain () {DoubleA,b,c,r; CIN>>a>>b>>C; if(a+b>c) && (c+b>a) && (a+c>b)) {R= (a+b+c)/2; printf ("%.4LF", sqrt (r* (r-a) * (r-b) * (rc)); }    Elsecout<<"Data Error"; return 0;}

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#include <iostream>#include<cstdio>#include<cmath>using namespacestd;intMain () {DoubleX1,x2,x3,y1,y2,y3,a,b,c,r; CIN>>x1>>y1>>x2>>y2>>x3>>Y3; A=sqrt ((x1-x2) * (X1-X2) + (y1-y2) * (y1-y2)); b=sqrt ((x2-x3) * (X2-X3) + (y2-y3) * (y2-y3)); C=sqrt ((x1-x3) * (X1-X3) + (y1-y3) * (y1-y3)); R= (a+b+c)/2; printf ("%.2LF", sqrt (r* (r-a) * (r-b) * (rc)); return 0;}

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#include <iostream>#include<cstdio>#include<cmath>using  namespace  std; int Main () {    int  a1,a2,n;    CIN>>a1>>a2>>N;    cout<<a1+ (A2-A1) * (n1);     return 0 ;}

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#include <iostream>#include<cstdio>#include<cmath>using  namespace  std; int Main () {longlong  a,b;cin>>a>>b;cout<<a*b;     return0;}

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#include <iostream>#include<cstdio>#include<cmath>using namespacestd;#definefor (i,j,k) for (int i=j;i<=k;i++)intMain () {Long Longa,b;cin>>a;b=1; For (I,1, a) b=b*2; cout<<b; return 0;}

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Unexpected harvest: Helen formula

1.3 Arithmetic expressions and sequential execution of programming basics