求助！ 求助！求助！

Xmd123456 @ 2023-04-09 01:00:33

#include<bits/stdc++.h>
using namespace std;
string to_upper(string s){
    for (int i = 0; i < s.length(); i++)
        if ('a' <= s[i] && s[i] <= 'z')
            s[i] -= 'a' - 'A';
    return s;
}
int main() {
    int N;
    cin >> N;
    string s[5005], s1, s2;
    getline (cin, s1);
    s2 = to_upper (s1);
    for (int i = 1; i <= N; i++)
        s[i] = s[i - 2] + s[i - 1];
    cout << s[N];
    return 0;
}v

by z_scar @ 2023-04-09 09:45:23

你最后一行的“v”是什么？ （下面附上我的代码）

#include<bits/stdc++.h>
using namespace std;
int n,m[5010][5010],z;
int main()
{
    cin>>n;
    z=1;
    m[1][1]=1;
    m[2][1]=2;
    for(int i=3;i<=n;i++) 
    {
        for(int j=1;j<=z;j++) m[i][j]=m[i-1][j]+m[i-2][j];
        for(int j=1;j<=z;j++)
        {
            if(m[i][j]>=10)
            {
                m[i][j+1]+=m[i][j]/10;
                m[i][j]%=10;
                if(m[i][z+1]>0)z++;
            }
        }
    }
    for(int i=z;i>=1;i--) cout<<m[n][i];
    return 0;
}

by Xmd123456 @ 2023-04-22 13:11:41

@xzydsb 感谢