#includeiostreamusing namespace std;int main(){ int h,r; cinhr; double i; i=3.14*r*r*h; double t=20000/i; int t2=t; if(t==t2) coutt2; else coutt2+1; return 0;}
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#include cstdiousing namespace std;int main (){int h,r;scanf("%d %d",r);printf("%d",int(20000/(3.14159*r*r*h)+1));return 0;}
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#include bits/stdc++.husing namespace std;int main(){ int a; cina; int b=a/100; int g=a%10; int s=a/10%10; coutg; coutsb; return 0;}
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#include bits/stdc++.husing namespace std;int main(){ double a; cina; printf("%.2lf",3.14*4/3*a*a*a); return 0;}
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#includeiostreamusing namespace std;int main() {double a, b;cin a b;int t = (int)(a / b);cout a - b * t;return 0;}
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#include bits/stdc++.husing namespace std;int main(){ double a,b,c; cinabc; double p=(a+b+c)/2; printf("%.3lf",sqrt(p*(p-a)*(p-b)*(p-c))); return 0;}
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#include bits/stdc++.husing namespace std;int main(){ double z,g,d; z=9.6*6; g=z-9.4*5; d=z-9.8*5; //coutfixedsetprecision(2)(z-g-d)/4; printf("%5.2f",(z-g-d)/4); return 0;}
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#include iostream#include iomanipusing namespace std;int main(){ double n,m,sum; cinnm; sum=n*87+m*85; coutfixedsetprecision(4)sum/(n+m); return 0;}
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#include bits/stdc++.husing namespace std;int main(){ int a; cina; int b=a/100; int g=a%10; int s=a/10%10; if(g!=0) coutg; coutsb; return 0;}
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#include bits/stdc++.husing namespace std;int main(){ char d; cind; cout" "dendl; cout" "dddendl; coutdddddendl; cout" "dddendl; cout" "dendl; return 0;}
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