西工大NOJ100题+解答

西工大NOJ100题+解答

#includestdio.hintmain(){

inta,b,sum;

scanf(“%d%d",a,sum=a+b;

printf("%d\n",sum);return0;}

#includestdio.h#definePI3.***-*****intmain(){

doubler,h,l,s,sq,vq,vz;scanf("%lf%lf",r,l=2*PI*r;s=PI*r*r;sq=4*PI*r*r;vq=PI*r*r*r*4/3;vz=PI*r*r*h;

printf("%.2lf\n%.2lf\n%.2lf\n%.2lf\n%.2lf\n",l,s,sq,vq,vz);return0;}

#includestdio.hintmain(){

doublema,eng,c,sum,ave;

scanf("%lf%lf%lf",ma,eng,sum=ma+eng+c;ave=sum/3;

printf("%lf\n%lf\n",sum,ave);return0;}

#includestdio.hintmain(){

inta,b,c,m;

scanf("%d%d%d",a,b,if(ab)m=a;elsem=b;if(mc)m=c;

printf("%d",m);return0;}

#includestdio.hintmain(){

intn;

scanf("%d",

if((1000n*****)(n/1000==n%10)(n/100%10==n/10%10))printf("yes\n");elseif((100n=1000)(n/100==n%10))printf("yes\n");elseif((10n=100)(n/10==n%10))printf("yes\n");elseif(0n=10)printf("yes\n");elseprintf("no\n");return0;}

#includestdio.hintmain(){

doublel,bon;scanf("%lf",if(l=10)bon=l*0.1;

elseif(l20)bon=1+(l-10)*0.075;elseif(l40)bon=1.75+(l-20)*0.05;elseif(l60)bon=2.75+(l-40)*0.03;elseif(l100)bon=3.35+(l-60)*0.015;elsebon=3.95+(l-100)*0.01;printf("%lf\n",bon);return0;}

#includestdio.hintmain(){

doubled,m;scanf("%lf",if(d=2)m=7;elseif(d=15){

if(d-2==(int)(d-2))m=7+(d-2)*1.5;elsem=7+((int)(d-2)+1)*1.5;}

elseif(d-15==(int)(d-15))m=26.5+(d-15)*2.1;else

m=26.5+((int)(d-15)+1)*2.1;printf("%lf\n",m);return0;}

#includestdio.hintmain(){

inty,m,d,Days,sum;

scanf("%d-%d-%d",y,m,

if((y%4==0y%100!=0)||(y%400==0))Days=29;elseDays=28;

switch(m){

case1:sum=d;break;case2:sum=31+d;break;

case3:sum=31+Days+d;break;case4:sum=62+Days+d;break;case5:sum=92+Days+d;break;case6:sum=123+Days+d;break;case7:sum=153+Days+d;break;case8:sum=184+Days+d;break;case9:sum=215+Days+d;break;case10:sum=245+Days+d;break;case11:sum=276+Days+d;break;case12:sum=307+Days+d;break;}

printf("%d\n",sum);return0;}

#includestdio.hintmain(){

inti;

scanf("%d",

if(i=90)printf("A\n");

elseif(i=80)printf("B\n");elseif(i=70)printf("C\n");else

if(i=60)printf("D\n");elseprintf("E\n");return0;}

#includestdio.hintmain(){

doublex,y;

scanf("%lf,%lf",x,

if((x-2)*(x-2)+(y-2)*(y-2)=1)printf("10");

elseif((x-2)*(x-2)+(y+2)*(y+2)=1)printf("10");elseif((x+2)*(x+2)+(y+2)*(y+2)=1)printf("10");elseprintf("0");return0;}

if((x+2)*(x+2)+(y-2)*(y-2)=1)

printf("10");

else

#includestdio.hintmain(){

doublel,x,r;

scanf("%lf%lf",l,while((2*l*l*l-4*l*l+3*l-6)!=0(2*r*r*r-4*r*r+3*r-

6)!=0){x=(l+r)/2;if((2*l*l*l-4*l*l+3*l-6)*(2*x*x*x-4*x*x+3*x-6)=0)r=x;elsel=x;}

if(2*l*l*l-4*l*l+3*l-6==0)printf("%.2lf",l);elseprintf("%.2lf",r);return0;}

#includestdio.h#includemath.hintmain(){

inti=800,t=2,cnt=0,sum=0;doublee=-1;while(i=500){while(t=i-1){

if(i%t==0)break;t++;}

if(t==i)e=pow(-1,cnt),sum=sum+e*i,cnt++;i--;t=2;}

printf("%d%d",cnt,sum);return0;}

#includestdio.h#includemath.hintmain(){

inta=1;

doubleb=1,pi=0,c=1;while(fabs(c)=1e-6)pi=pi+c,b=b+2,a=-a,c=a/b;pi=pi*4;

printf("%lf\n",pi);return0;}

#includestdio.hintmain(){

inta1=1,a2=1,n=2,sum=2,t;while(sum=100){t=a1;a1=a2;

a2=t+2*a2;sum=sum+a2;n++;}

printf("%d\n",n-1);while(sum=1000){t=a1;a1=a2;

a2=t+2*a2;sum=sum+a2;n++;}

printf("%d\n",n-1);while(sum=*****){t=a1;a1=a2;

a2=t+2*a2;

sum=sum+a2;n++;}

printf("%d\n",n-1);}

#includestdio.hintmain(){

intx,a,s,n=1;

scanf("%d%d",x,s=x;if(a!=0){

for(;nn++){

s=s*x;

if(s=1000)s=s/100%10*100+s/10%10*10+s%10;}}

printf("%d\n",s);return0;}

#includestdio.hintmain(){

intm,n,s;

scanf("%d",s=n*n*n;

for(m=1;s!=n*m;m++);

printf("%d*%d*%d=%d=",n,n,n,s);

if(n%2==1){

for(s=-n/2;ss++)printf("%d+",m+2*s);printf("%d",m+n/2*2);}else{

for(s=-n/2;sn/2-1;s++)printf("%d+",m+s*2+1);printf("%d",m+(n/2-1)*2+1);}

return0;}

#includestdio.hintmain(){

chara,b,c,x,y,z;a='A',b='B',c='C',x='X',y='Y',z='Z';printf("%c=%c\n",a,z);

printf("%c=%c\n",b,x);printf("%c=%c\n",c,y);return0;}#includestdio.hintmain(){inta,b,t;

scanf("%d%d",a,if(ab)t=a,a=b,b=t;for(;aa++){for(t=2;tt++)if(a%t==0)break;if(t==a)printf("%d",a);}return0;}

#includestdio.hintmain(){

intn=1;

doublea1=1,a2=2,a3,sum=2;while(n=19){a3=a1+a2;sum=sum+a3/a2;a1=a2;a2=a3;n++;}printf("%lf\n",sum);return0;}

#includestdio.h#includemath.hintmain(){

doublea;intn=0;scan