题目链接：https://vjudge.net/contest/355760 password：123
HDU2005:
#include<iostream>
#include<cstring>
#include<cstdio>
#include<algorithm>
#include<cmath>
using namespace std;
const int MAX=1e5+10;
#define PI acos(-1)
int year,month,day;
bool check(int a){
if((a%4!=0)||(a%100==0&&a%400!=0))
return false;
else
return true;
}
int main(){
int a[]={0,31,28,31,30,31,30,31,31,30,31,30,31};//365
int b[]={0,31,29,31,30,31,30,31,31,30,31,30,31};//366
while(scanf("%d/%d/%d",&year,&month,&day)!=EOF){//输入格式YYYY/MM/DD
bool flag=check(year);//true==闰年29天
if(flag){
int sum=0;
for(int i=0;i<month;i++)
sum+=b[i];
printf("%d\n",sum+day);
}else{
int sum=0;
for(int i=0;i<month;i++)
sum+=a[i];
printf("%d\n",sum+day);
}
}
return 0;
}
/*Sample Input
1985/1/20
2006/3/12
Sample Output
20
71*/HDU2006:
#include<iostream>
#include<cstring>
#include<cstdio>
#include<algorithm>
#include<cmath>
using namespace std;
const int MAX=1e5+10;
int a[MAX],n;
int main(){
while(scanf("%d",&n)!=EOF){
long long int sum=1;
for(int i=0;i<n;i++)
scanf("%d",&a[i]);
for(int i=0;i<n;i++){
if(a[i]%2)
sum=sum*a[i];
}
printf("%lld\n",sum);
}
}
/*Sample Input
3 1 2 3
4 2 3 4 5
Sample Output
3
15*/ HDU2007:
#include<iostream>
#include<cstring>
#include<cstdio>
#include<algorithm>
#include<cmath>
using namespace std;
const int MAX=1e5+10;
int main(){
int a,b;
while(scanf("%d%d",&a,&b)!=EOF){
int suma=0,sumb=0;
if(a>b)
swap(a,b);
for(int i=a;i<=b;i++){
if(i%2==0)
suma+=i*i;
else
sumb+=i*i*i;
}
printf("%d %d\n",suma,sumb);
}
}
/*Sample Input
1 3
2 5
Sample Output
4 28
20 152*/HDU2008:
#include<cstdio>
#include<algorithm>
#include<cmath>
using namespace std;
const int MAX=1e5+10;
int main(){
int n;
float a[MAX];
while(scanf("%d",&n)&&n){
int cnt1=0,cnt2=0,cnt3=0;
for(int i=0;i<n;i++)
scanf("%f",&a[i]);
for(int i=0;i<n;i++){
if(a[i]<0) cnt1++;
else if(a[i]==0) cnt2++;
else cnt3++;
}
printf("%d %d %d\n",cnt1,cnt2,cnt3);
}
return 0;
}
/*Sample Input
6 0 1 2 3 -1 0
5 1 2 3 4 0.5
0
Sample Output
1 2 3
0 0 5*/HDU2009:
#include<cstdio>
#include<algorithm>
#include<cmath>
using namespace std;
const int MAX=1e5+10;
int main(){
double n,m;
while(scanf("%lf %lf",&n,&m)!=EOF){
double sum=0;
for(int i=0;i<m;i++){
sum+=n;
n=sqrt(n);
}
printf("%.2lf\n",sum);
}
}
/*Sample Input
81 4
2 2
Sample Output
94.73
3.41*/