参考题解cpp

#include <iostream>
#include <vector>
#include <algorithm>
#include <queue>
#include <deque>
#include <unordered_map>
#include <map>
#include <cstring>
#include <cmath>
#include <unordered_set>
#include <set>
#include <utility>
#include <climits>
#include <iomanip>
#include <stack>
#include <bitset>

#define int long long
#define PII pair<int, int> 
#define TLLL tuple<int , int , int>
#define INF 0x3f3f3f3f3f3f3f3f
#define inf 0x3f
#define all(v) v.begin() + 1 , v.end()
#define ALL(v) v.begin() , v.end()
#define endl "\n"
#define i128 __int128_t

using namespace std;

void solve()
{
    double m = 520000.0;
    double year = m / 36.0;
    printf("%.2f", year + (m - 21.0 * year) * 0.0038);
    return ;
}

signed main() 
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr), cout.tie(nullptr);
    int T = 1;
    // cin >> T;
    while (T -- ) solve();
    return 0;
}