online_judge_1186

#include <stdio.h>#include <stdlib.h>typedef struct Date{    int year;    int month;    int day;}Date;int isRun(int n){    return ((n%4==0&&n%100!=0)||n%400==0);}int main(){    int y,n,i;    int a[12]={31,28,31,30,31,30,31,31,30,31,30,31};    Date d;    int b[12];    b[0]=a[0];    while(~scanf("%d%d",&y,&n))    {        if(y<1||y>3000||n<1||n>366) continue;        if(isRun(y)) a[1]=29;        else a[1]=28;        for(i=1;i<12;i++)            b[i]=b[i-1]+a[i];        d.year=y;        for(i=0;i<12;i++)            if(b[i]>=n) break;        d.month=i+1;        d.day=n-b[i-1];        printf("%04d-%02d-%02d\n",d.year,d.month,d.day);    }    return 0;}