2019年蓝桥杯国赛c++/c B组

A 平方序列

代码：

#include<iostream>
#include<cstring>
#include<algorithm>
#include<cstdio>
#include<cmath>
#define mp make_pair
#include<queue>
#include<vector>
#include<map>
using namespace std;
#define ll long long
int main()
{
	int n=2019*2019;
	int ans=0xffffff;
	for(int x=2020;x<10000;x++)
	{
		for(int y=2020;y<10000;y++)
		{
			if(x*x-n==y*y-x*x)//求d
			{
				if(x+y<ans)ans=x+y;//求最小
			}
		}
	}
	cout<<ans<<endl;
	return 0;
 } 
 //7020

B 质数拆分

代码：

#include<iostream>
#include<cstring>
#include<algorithm>
#include<cstdio>
#include<cmath>
#define mp make_pair
#include<queue>
#include<vector>
#include<map>
using namespace std;
#define ll long long
int prime[307]={0,2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113,
127,131,137,139,149,151,157,163,167,173,179,181,191,193,197,199,211,223,227,229,233,239,241,251,257,263,269,
271,277,281,283,293,307,311,313,317,331,337,347,349,353,359,367,373,379,383,389,397,401,409,419,421,431,433,
439,443,449,457,461,463,467,479,487,491,499,503,509,521,523,541,547,557,563,569,571,577,587,593,599,601,607,
613,617,619,631,641,643,647,653,659,661,673,677,683,691,701,709,719,727,733,739,743,751,757,761,769,773,787,
797,809,811,821,823,827,829,839,853,857,859,863,877,881,883,887,907,911,919,929,937,941,947,953,967,971,977,
983,991,997,1009,1013,1019,1021,1031,1033,1039,1049,1051,1061,1063,1069,1087,1091,1093,1097,1103,1109,1117,
1123,1129,1151,1153,1163,1171,1181,1187,1193,1201,1213,1217,1223,1229,1231,1237,1249,1259,1277,1279,1283,1289,
1291,1297,1301,1303,1307,1319,1321,1327,1361,1367,1373,1381,1399,1409,1423,1427,1429,1433,1439,1447,1451,1453,
1459,1471,1481,1483,1487,1489,1493,1499,1511,1523,1531,1543,1549,1553,1559,1567,1571,1579,1583,1597,1601,1607,
1609,1613,1619,1621,1627,1637,1657,1663,1667,1669,1693,1697,1699,1709,1721,1723,1733,1741,1747,1753,1759,1777,
1783,1787,1789,1801,1811,1823,1831,1847,1861,1867,1871,1873,1877,1879,1889,1901,1907,1913,1931,1933,1949,1951,
1973,1979,1987,1993,1997,1999,2003,2011,2017}; //打表

int main()
{  
	long long a[2020]={1};
    for(int i=1;i<=306;i++)//dp
    {
        for(int j=2019;j>=prime[i];j--)
            a[j]+=a[j-prime[i]];
    }
    printf("%lld",a[2019]);
	return 0;
}

C 拼接

D 求值

代码：

#include<iostream>
#include<cstring>
#include<algorithm>
#include<cstdio>
#include<cmath>
#define mp make_pair
#include<queue>
#include<vector>
#include<map>
using namespace std;
#define ll long long
int solve(int a)
{
	int sum=0;
	for(int i=1;i<=a;i++)
	{
		if(a%i==0)sum++;
	}
	return sum;
}
int main()
{  
	for(int i=6;i<10000000;i++)
	{
		if(solve(i)==100)
		{
			cout<<i<<endl;
			return 0;
		}
	}
	return 0;
}
//45360

标签：杯国赛,ll,long,蓝桥,int,2019,include,define
来源： https://blog.csdn.net/zranxi/article/details/112338829