66 solutions
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[InternetShortcut] URL=https://www.lizikid.cn/contest/66ed2273778ec12e1e7214c7
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#include<bits/stdc++.h> using namespace std; int gcd(int a,int b) { if(b==0) return a; return gcd(b,a%b); } int main() { int t,m; cin>>t>>m; for(int i=1;i<=t;i++) { int a,b,c; cin>>a>>b>>c; double delta=b*b-4*a*c; if(delta==0) { int p=-b,q=2*a; int k=gcd(p,q); p/=k;q/=k; if(q<0) { p=-p,q=-q; } } else { int p=-b,q=2*a; int sd=sqrt(delta); if(sd*sd==delta) { if(q<0) { p=-p,q=-q; } p+=sd; int k=gcd(p,q); p/=k; q/=k; if(q<0) { p=-p,q=-q; } } else { int k=gcd(p,q); p/=k; q/=k; if(q<0) { p=-p; q=-q; } int d1=1,d2=delta; int q=abs(2*a); for(int i=sd;i>=1;i--) { int j=i*i; if(d2%j==0) { d2/=j; d1*=i; break; } } k=gcd(d1,q); d1/=k; q/=k; } } } cout<<"Hello,World!"; return 0; }
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[《STEMA线上考试系统考生指南》](https://lizikid.cn/p/838/file/《 STEMA 线上考试系统考生指南》.pdf?type=additional_file)
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//1. #include<bits/stdc++.h> using namespace std; int main() { int n,s,d,q=0; cin>>n; for (int i=1;i<=n;i++) { cin>>s>>d; if (s>d) { q+=3; } else if(s==d) { q++; } } cout<<q; return 0; }
//2. #include<bits/stdc++.h> using namespace std; int main() { int t,a=0,s; cin>>s; for (int i=1;i<=0;i++) { t=sqrt(i); if(t*t!=i) continue; int g=i%10,q=i/10%10,b=i/100%10; if(gq||qb||gb) { a++; if (as) { cout<<i; return 0; } } } return 0; }
//3. #include<bits/stdc++.h> using namespace std; int main() { int n,x,s=110; cin>>n; for (int i=1;i<=n,i++) { cin>>x; if (x>s) { cout<<"y"<<endl; } else { cout<<"N"<<endl; } if (s>x) { s=x; } } return 0; }
//4. #include<bits/stdc++.h> using namespace std; int main() { int a; cin>>a; for (int i=n-1;i>=1;i--) { bool st=1; for (int j=2;j<=i/j;j++) { if (i%j==0) { st=0; } } if (st) { cout<<i; return 0; } } return 0; }
//6. #include<bits/stdc++.h> using namespace std; int main() { int n; cin>>n; for (int i=1;i<=n;i++) { for (int j=1;j<i;j++) cout<<" "; for (int j=1;j<=n;j++) cout<<"*"; cout<<endl; } return 0; }
Information
- ID
- 838
- Time
- 1000ms
- Memory
- 256MiB
- Difficulty
- 2
- Tags
- # Submissions
- 342
- Accepted
- 99
- Uploaded By