学步园

给定一个日期，输出这个日期是该年的第几天。输入数据有多组，每组占一行，数据格式为YYYY/MM/DD组成。对于每组输入数据，输出一行，表示该日期是该年的第几天。

比如
1985/1/20
2006/3/12
输出
20
71

main(y,m,d){while(scanf("%d/%d/%d",&y,&m,&d)==3){char s[]={0,1,-1,0,0,1,1,2,3,3,4,4};m--;d+=m*30+s[m],(y%400==0||y%100&&y%4==0)&&m>1&&d++;printf("%d\n",d);}}

int s[]={0,1,-1,0,0,1,1,2,3,3,4,4};main(y,m,d){for(;~scanf("%d/%d/%d",&y,&m,&d);printf("%d\n",d+m*30+s[m]+!((y%400&&0==y%100||y%4)||m<2)))m--;}

int s[]={0,1,-1,0,0,1,1,2,3,3,4,4};main(y,m,d){for(;~scanf("%d/%d/%d",&y,&m,&d);printf("%d\n",d+m*30+s[m]+!(y%400&&0==y%100||y%4||m<2)))m--;}

int s[]={0,1,-1,0,0,1,1,2,3,3,4,4};main(y,m,d){for(;~scanf("%d/%d/%d",&y,&m,&d);printf("%d\n",d+m*30+s[m]+!(y/100%4||y%4||m<2)))m--;}

int s[]={0,1,-1,0,0,1,1,2,3,3,4,4};main(y,m,d){for(;~scanf("%d/%d/%d",&y,&m,&d);printf("%d\n",d+m*30+s[m]+!(y/100%4+y%4||m<2)))m--;}

main(y,m,d){for(;~scanf("%d/%d/%d",&y,&m,&d);printf("%d\n",d+m*30+"bcabbccdeeff"[m]-'b'+!(y/100%4+y%4||m<2)))m--;}

main(y,m,d){for(;~scanf("%d/%d/%d",&y,&m,&d);printf("%d\n",d+m*30+"BCABBCCDEEFF"[m-1]-96+!(y/100%4+y%4||m<3)));}

main(y,m,d){for(;~scanf("%d/%d/%d",&y,&m,&d);printf("%d\n",d+m*30+"XBCABBCCDEEFF"[m]-96+!(y/100%4+y%4||m<3)));}

main(y,m,d){for(;~scanf("%d/%d/%d",&y,&m,&d);printf("%d\n",d+m*30+"XBCABBCCDEEFF"[m]-95-(y/100%4+y%4||m<3)));}

不多解释了...

也许这里只有y/100%4+y%4判断是否是闰年有点价值吧...