#include iostream#include iomanip#include cmathusing namespace std;int main(){int a1,a2,n;cina1a2n;int b=a2-a1;couta1+(n-1)*b;return 0;}
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#include iostream#include iomanipusing namespace std;int main(){long long a,b;cinab;couta*b;return 0;}
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#include iostream#include iomanip#include cmathusing namespace std;int main(){int n;cinn;int a=pow(2,n);couta;return 0;}
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#include iostream#include iomanipusing namespace std;int main(){int n,x,y;cinnxy;int t=y/x;if(y%x!=0) t++;if(tn) cout0;else coutn-t;return 0;}
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#include iostream#include iomanipusing namespace std;int main(){int a,b,c,d,e;cinabcde;int num=a/3;a=num;b+=num,e+=num;num=b/3;b=num;c+=num,a+=num;num=c/3;c=num;d+=num,b+=num;num=d/3;d=num;e+=num,c+=num;num=e/3;e=num;a+=num,d+=num;coutsetw(
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#include iostream#include iomanipusing namespace std;int main(){float f;cinf;coutfixedsetprecision(3)f;return 0;}
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#include iostream#include iomanipusing namespace std;int main(){double d;cind;coutfixedsetprecision(12)d;return 0;}
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#include iostream#include iomanipusing namespace std;int main(){char a;int b;float c;double d;cinabcd;couta" "b" ";coutfixedsetprecision(6)c" "d;return 0;}
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#include iostream#include iomanipusing namespace std;int main(){double a;cina;printf("%f\n%.5f\n%e\n%g",a,a,a,a);return 0;}
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#include iostream#include iomanipusing namespace std;int main(){char c;cinc;cout" "c"\n" " "ccc"\n" ccccc"\n" " "ccc"\n" " "c;return 0;}
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