#include bits/stdc++.husing namespace std;int main(){ bool a; char b; coutsizeof(a)" "sizeof(b); return 0;}
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#include bits/stdc++.husing namespace std;int main(){ float a; double b; coutsizeof(a)" "sizeof(b); return 0;}
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#include iostreamusing namespace std;int main(){int a;short b;coutsizeof(a)" "sizeof(b);}
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#include bits/stdc++.husing namespace std;int main(){ int a,b,c; cinabc; couta*0.2+b*0.3+c*0.5; return 0;}
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#include iostream#include cstdio#include cstringusing namespace std;int main(){ double a,b; cinab; printf("%.2lf",1/(1/a+1/b)); return 0;}
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#include iostream#include cstdio#include cstringusing namespace std;int main(){ double r; cinr; printf("%.4lf %.4lf %.4lf",2*r,2*r*3.14159,r*r*3.14159); return 0;}
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#include iostream#include cstdio#include cstringusing namespace std;int main(){ double a; cina; printf("%.5lf",5*(a-32)/9); return 0;}
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#include iostream#include iomanip //in输入out输出manipulator控制器using namespace std;int main(){ double x,a,b,c,d; cinxabcd; coutfixedsetprecision(7)a*x*x*x+b*x*x+c*x+d; return 0;}//error 错误 程序无法执行//warning 警告 有隐
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#include iostream#include cstdio#include cstringusing namespace std;int main(){ double a,b,c,d,x; cinabcdx; printf("%.7lf",b*a*a*a+c*a*a+d*a+x); return 0;}
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#include iostream#include cstdio#include cstringusing namespace std;int main(){ int x,y; cinxy; double a=1.0*y/x*100; printf("%.3lf%%",a); 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=...