1 #include<iostream>
2 #include<string>
3 #include<cstring>
4 using namespace std;
5
6 class Date
7 {
8 private:
9 int year;
10 int month;
11 int day;
12 public:
13 void get()
14 {
15 int a,b,c;
16 cin>>a;
17 getchar();
18 cin>>b;
19 getchar();
20 cin>>c;
21 year=a;
22 month=b;
23 day=c;
24 return;
25 }
26 friend int days(Date a,Date b);
27 };
28
29 int days(Date a,Date b)
30 {
31 int day1=0;
32 Date temp;
33 if((a.year<b.year)||((a.year==b.year)&&(a.month<b.month))||((a.year==b.year)&&(a.month==b.month)&&(a.day<b.day)))
34 {
35 temp=a;
36 a=b;
37 b=temp;//保证a比b日期靠后
38 }
39 if(a.year!=b.year)
40 {
41 day1+=(a.year-b.year-1)*365;//不考虑闰年和不完整年的整年天数
42 day1+=((((a.year-1)/4) - ((a.year-1)/100) + ((a.year-1)/400))-(((b.year-1)/4) - ((b.year-1)/100) + ((b.year-1)/400)));//期间闰年天数
43 for(int i=b.month;i<=12;i++)
44 {
45 switch(i)
46 {
47 case 1:
48 {
49 day1+=31;
50 break;
51 }
52 case 2:
53 {
54 day1+=28;
55 break;
56 }
57 case 3:
58 {
59 day1+=31;
60 break;
61 }
62 case 4:
63 {
64 day1+=30;
65 break;
66 }
67 case 5:
68 {
69 day1+=31;
70 break;
71 }
72 case 6:
73 {
74 day1+=30;
75 break;
76 }
77 case 7:
78 {
79 day1+=31;
80 break;
81 }
82 case 8:
83 {
84 day1+=31;
85 break;
86 }
87 case 9:
88 {
89 day1+=30;
90 break;
91 }
92 case 10:
93 {
94 day1+=31;
95 break;
96 }
97 case 11:
98 {
99 day1+=30;
100 break;
101 }
102 case 12:
103 {
104 day1+=31;
105 break;
106 }
107 }
108 }
109 day1-=b.day;
110 for(int i=a.month-1;i>=1;i--)
111 {
112 switch(i)
113 {
114 case 1:
115 {
116 day1+=31;
117 break;
118 }
119 case 2:
120 {
121 day1+=28;
122 break;
123 }
124 case 3:
125 {
126 day1+=31;
127 break;
128 }
129 case 4:
130 {
131 day1+=30;
132 break;
133 }
134 case 5:
135 {
136 day1+=31;
137 break;
138 }
139 case 6:
140 {
141 day1+=30;
142 break;
143 }
144 case 7:
145 {
146 day1+=31;
147 break;
148 }
149 case 8:
150 {
151 day1+=31;
152 break;
153 }
154 case 9:
155 {
156 day1+=30;
157 break;
158 }
159 case 10:
160 {
161 day1+=31;
162 break;
163 }
164 case 11:
165 {
166 day1+=30;
167 break;
168 }
169 case 12:
170 {
171 day1+=31;
172 break;
173 }
174 }
175 }
176 day1+=a.day;
177 if(((b.year%4==0&&b.year%100!=0)||(b.year%400==0))&&(b.month>2))
178 day1-=1;
179 if(((a.year%4==0&&a.year%100!=0)||(a.year%400==0))&&(a.month>2))
180 day1+=1;
181 }
182 else
183 {
184 for(int i=b.month;i<a.month;i++)
185 {
186 switch(i)
187 {
188 case 1:
189 {
190 day1+=31;
191 break;
192 }
193 case 2:
194 {
195 day1+=28;
196 break;
197 }
198 case 3:
199 {
200 day1+=31;
201 break;
202 }
203 case 4:
204 {
205 day1+=30;
206 break;
207 }
208 case 5:
209 {
210 day1+=31;
211 break;
212 }
213 case 6:
214 {
215 day1+=30;
216 break;
217 }
218 case 7:
219 {
220 day1+=31;
221 break;
222 }
223 case 8:
224 {
225 day1+=31;
226 break;
227 }
228 case 9:
229 {
230 day1+=30;
231 break;
232 }
233 case 10:
234 {
235 day1+=31;
236 break;
237 }
238 case 11:
239 {
240 day1+=30;
241 break;
242 }
243 case 12:
244 {
245 day1+=31;
246 break;
247 }
248 }
249 }
250 day1+=a.day;
251 day1-=b.day;
252 if(b.month==2&&b.day==29)
253 day1++;
254 if(((a.year%4==0&&a.year%100!=0)||(a.year%400==0))&&(b.month<=2&&b.day!=29&&a.month>2))
255 {
256 day1++;
257 }
258 }
259 return day1;
260 }
261
262 int main()
263 {
264 Date y1,y2;
265 y1.get();
266 y2.get();
267 cout<<days(y1,y2);
268 return 0;
269 }
