#include iostream#include iomanipusing namespace std;int main(){char c;cinc;int a=c;couta;return 0;}
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#include iostream#include iomanipusing namespace std;int main(){int a;cina;char c=a;coutc;return 0;}
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#include iostream#include iomanipusing namespace std;int main(){int a;cina;bool b=a;int c=b;coutc;return 0;}
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#include iostreamusing namespace std;int main(){coutsizeof("Hello, World!");return 0;}
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/*直径=2*半径周长=2*pi*半径面积=pi*半径*半径pi=3.1415926*/#include iostream#include iomanipusing namespace std;int main(){double r;cinr;double d,l,s,pi=3.1415926;d=2*r;l=2*pi*r;s=pi*r*r;coutfixedsetprecision(4)d" "l" "s;return
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#include iostreamusing namespace std;int main(){int x,y;cinxy;int t=(y-2*x)/2;int j=x-t;coutj" "t;return 0;}
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#include iostream#include iomanipusing namespace std;int main(){int a,b;cinab;double p=1.0*b/a;coutfixedsetprecision(3)p*100"%";return 0;}
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#include iostream#include iomanipusing namespace std;int main(){double x,a,b,c,d;cinxabcd;double fx=a*x*x*x+b*x*x+c*x+d;coutfixedsetprecision(7)fx;return 0;}
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#include iostream#include iomanipusing namespace std;int main(){double c,f;cinf;c=5*(f-32)/9;coutfixedsetprecision(5)c;return 0;}
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/*直径=2*半径周长=2*pi*半径面积=pi*半径*半径pi=3.14159*/#include iostream#include iomanipusing namespace std;int main(){double r;cinr;double d,l,s,pi=3.1415926;d=2*r;l=2*pi*r;s=pi*r*r;coutfixedsetprecision(4)d" "l" "s;return 0
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#include iostream#include queueusing namespace std;struct node{char c;node *left,...
#include iostreamusing namespace std;int n,m;long long a[100050];long long l=0,r=...