Wrong Answer
foo.cc: In function 'int main()':
foo.cc:7:18: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
7 | if(a%4==0&&a%100!=4||a%400==0)
| ~~~~~~^~~~~~~~~~
[Hydro](https://hydro.ac)提供评测服务
foo.cc: In function 'int main()':
foo.cc:7:18: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
7 | if(a%4==0&&a%100!=4||a%400==0)
| ~~~~~~^~~~~~~~~~
[Hydro](https://hydro.ac)提供评测服务
