1 #include<stdio.h>
 2 #include<string.h>
 3 int reyue []={0,31,29,31,30,31,30,31,31,30,31,30,31};
 4 int noyue []={0,31,28,31,30,31,30,31,31,30,31,30,31};
 5 bool Isy(int n){   
 6   if((n%4==0&&n%100!=0)||n%400==0)return 1;
 7   return 0;
 8 }
 9 void nday(int da){
10   int year=2013,yue=1,day=1;
11   int pn=2013,py=12,pd=31;
12   int d=da+82;
13   while(d>=365){
14       if(Isy(year)) d-=366;
15     else d-=365;
16     if(d>=0)year++;
17   }
18   if(d==-1) yue=12,day=31;
19   else
20     if(Isy(year))
21       while(d>=reyue[yue]) d-=reyue[yue++];
22   else
23      while(d>=noyue[yue]) d-=noyue[yue++];
24     day+=d;
25    d=da+282;
26    while(d>365){
27         if(Isy(pn)) d-=366;
28         else  d-=365;
29         pn--;
30    }
31    if(Isy(pn)){
32         while(d>reyue[py]) d-=reyue[py--];
33         pd=reyue[py]-d;
34    }
35   else{
36      while(d>noyue[py]) d-=noyue[py--];
37      pd=noyue[py]-d;
38   }
39    if(pd==0){
40       py--;
41    if(py==0) pn--,py=12,pd=31;
42    else if(Isy(pn)) pd=reyue[py];
43          else pd=noyue[py];
44    }
45  printf("%04d/%02d/%02d %04d/%02d/%02d\n",year,yue,day,pn,py,pd);
46 }
47 int main(){
48     int d,cas;
49     scanf("%d",&cas);
50     while(cas--){
51      scanf("%d",&d);
52      nday(d);
53     }
54  return 0;
55 }

 1 #include<stdio.h>
 2 #include<string.h>
 3 int ryue [2][13]={{365,31,28,31,30,31,30,31,31,30,31,30,31},
 4              {366,31,29,31,30,31,30,31,31,30,31,30,31}};
 5 int Isy(int n){
 6   if((n%4==0&&n%100!=0)||n%400==0)return 1;
 7   return 0;
 8 }
 9 struct Time{
10   int year,mon,day;
11 };
12 void nday(int da){
13   Time t1={2013,1,1},t2={2013,12,31};
14   int d=da+82;
15   while(d>=365){
16      d-=ryue[Isy(t1.year)][0];
17      if(d>=0)t1.year++;
18   }
19   if(d==-1) t1.mon=12,t1.day=31;
20   else
21     while(d>=ryue[Isy(t1.year)][t1.mon]) d-=ryue[Isy(t1.year)][t1.mon++];
22     t1.day+=d;
23     d=da+282;
24    while(d>365){
25         d-=ryue[Isy(t2.year)][0];
26         t2.year--;
27    }
28    while(d>ryue[Isy(t2.year)][t2.mon]) d-=ryue[Isy(t2.year)][t2.mon--];
29       t2.day=ryue[Isy(t2.year)][t2.mon]-d;
30    if(t2.day==0){
31       t2.mon--;
32    if(t2.mon==0) t2.year--,t2.mon=12,t2.mon=31;
33    else t2.day=ryue[Isy(t2.year)][t2.mon];
34    }
35  printf("%04d/%02d/%02d %04d/%02d/%02d\n",t1.year,t1.mon,t1.day,t2.year,t2.mon,t2.day);
36 }
37 int main(){
38     int d,cas;
39     scanf("%d",&cas);
40     while(cas--){
41      scanf("%d",&d);
42      nday(d);
43     }
44  return 0;
45 }