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全部文章（共23篇）

题解 | 牛牛学数列5

#include<bits/stdc++.h> using namespace std; int fibonacci(int n){ if(n<=0) return 0; if(n==1) return 1; int a =0,b=1,c; for(int i=2;i<...

2025-08-01

0 34

题解 | 牛牛学数列

#include<bits/stdc++.h> using namespace std; int main(){ int n; cin>>n; int sum= 0; for(int i=1;i<=n;i++){ if(i%2==0){ sum+=...

2025-07-29

0 44

题解 | 时间转换

#include<iostream> #include<cmath> using namespace std; int main(){ int s; cin>>s; int h,m,a; h = s/3600; m = (s%3600)/60; a =...

2025-07-24

0 28

题解 | 绕距

#include<bits/stdc++.h> using namespace std; int main(){ int x1,y1; cin>>x1>>y1; int x2,y2; cin>>x2>>y2; int dm = a...

2025-07-24

0 38

题解 | 反向输出一个四位数

#include<iostream> #include<cmath> using namespace std; int main(){ int n; cin>>n; int a,b,c,d,e,f; a = n/1000; b = n%1000; c ...

2025-07-24

0 42

题解 | 疫情死亡率

#include<bits/stdc++.h> using namespace std; int main(){ double c,d; cin>>c>>d; double a = d/c*100; cout<<fixed<<set...

2025-07-24

0 36

题解 | 疫情死亡率

#include<bits/stdc++.h> using namespace std; int main(){ double c,d; cin>>c>>d; double a = d/c*100; cout<<fixed<<set...

2025-07-24

0 33

题解 | 整数的十位

#include<iostream> #include<cstdlib> #include<cmath> using namespace std; int main(){ int a; cin>>a; int b; b = abs(a)/10;...

2025-07-24

0 43

题解 | 平方根

#include<iostream> #include<cmath> using namespace std; int main(){ int n; cin>>n; int a; a=sqrt(n); cout<<a; return 0; ...

2025-07-24

0 35

题解 | 牛牛学加法

#include <iostream> using namespace std; int main() { int a, b; cin>>a>>b; cout << a + b << endl; }

2025-07-19

0 27