2017G日期问题

http://oj.ecustacm.cn/problem.php?id=1328

#include <bits/stdc++.h>
using namespace std;
struct node{
    int y,m,d;
}s[10];
int cnt;
int a,b,c;
void check(int yy,int mm,int dd){
    int month[13] = {0,31,28,31,30,31,30,31,31,30,31,30,31};
    if(yy >= 60)
        yy += 1900;
    else yy += 2000;

    if(yy % 400 == 0 || (yy % 4 == 0 && yy % 100 != 0))
        month[2]++;
    if(mm > 0 && mm < 13){
        if(dd > 0 && dd <= month[mm]){
            s[cnt].y = yy;
            s[cnt].m = mm;
            s[cnt++].d = dd;
        }
    }
}

bool cmp(node aa,node bb){
    if(aa.y != bb.y)
        return aa.y < bb.y;
    else if(aa.m != bb.m)
        return aa.m < bb.m;
    return aa.d < bb.d;
}
int main(){
    scanf("%d/%d/%d",&a,&b,&c);
    check(c,a,b);
    check(c,b,a);
    check(a,b,c);

    sort(s,s+cnt,cmp);
    for(int i = 0; i < cnt; i++){
        if(i && s[i].y == s[i - 1].y && s[i].m == s[i - 1].m && s[i].d == s[i - 1].d)
            continue;
        printf("%d-%02d-%02d
",s[i].y,s[i].m,s[i].d);
    }
    return 0;
}