#include bits/stdc++.husing namespace std;int jc(int n){ if(n==1) return 1; return n*jc(n-1);}int main(){ int n; cinn; int s=0; for(int i=1;i=n;i++){ s+=jc(i); } couts; return 0;}
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#include bits/stdc++.husing namespace std;int main() { int n; cinn; for(int i=0;in;i++){ for(int j=0;ji+1;j++){ cout"*"; } coutendl; }return 0;}
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#include bits/stdc++.husing namespace std;int main() { for(int i=0;i=20;i++){ for(int j=0;j=34;j++){ int k=100-i-j; if(5*i+3*j+k/3==100k%3==0){ couti" "j" "kendl; } } }return 0;}
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#include bits/stdc++.husing namespace std;int main() { cout153endl; cout370endl; cout371endl; cout407endl;return 0;}
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#include iostream#include cmathusing namespace std;int main(){//根据数据范围20000找到所有素数int a[20050]={};for(int i=2;i=sqrt(20050);i++){if(a[i]==0){for(int j=i*i;j20050;j+=i){a[j]=1;}}}int c,d;cincd;for(int i=c;i=d;i++){if(a
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#include bits/stdc++.husing namespace std;int main() { for(int n=32;n99;n++){ int c=n*n; if(c%100%11==0c/100%11==0) coutcendl; }return 0;}
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#includebits/stdc++.h//2031using namespace std;int main(){int f=9999;for(int e=1000;e=f;e++){int a,b,c,d;a=e/10/10/10;b=e/10/10%10;c=e/10%10;d=e%10;int g=sqrt(e);if(a==bc==dg*g==e) coute"\n";else continue;/*完全平方数的性质:一个数如
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#includebits/stdc++.h//2031using namespace std;int main(){cout7744;return 0;}
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#include iostream#include cmathusing namespace std;//2032int main(){int n;cinn;int k=2;int f=0;coutn"=";while(true){if(n%k==0){if(f==0) {coutk;f=1;}else cout"*"k;n/=k;if(n==1) break;else continue;}k++;}}
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#include iostream#include algorithm //算法工具包using namespace std;int main(){ int n; cinn; coutn"="; while(n!=1){ for(int i=2;i=n;i++){ if(n%i==0){ couti; n/=i; break; } } if(n!=1) cout"*"; } 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=...