蓝桥杯 黑色星期五

#include<iostream> using namespace std; int main(int argc, char **argv) { int y; cin>>y; int days[13]= {0,31,28,31,30,31,30,31,31,30,31,30,31}; if(y%400==0||y%4==0&&y%100!=0) days[2]=29;

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