Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
159196 钱炜懿 09闰年第n个月有多少天 C++ Accepted 1 MS 272 KB 459 2026-08-26 16:27:57

Tests(10/10):

Code:

#include<bits/stdc++.h> using namespace std; int main(){ int x; cin>>x; switch (x){ case 1: case 3: case 5: case 7: case 8: case 10: case 12: cout<<"31"; break; case 4: case 6: case 9: case 11: cout<<"30"; break; case 2: cout<<"29"; break; default: cout<<"Invalid."<<endl; } return 0; }