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它表示实现if语句时矢量下标超出范围。我想我增加了额外的int到floor,或者额外的floor vector到2D vector。我正在使用VS 2010(C++) 我试图在其他问题上找到它,但没有成功。2D矢量下标超出范围
bool is_perfect_square(int);
int main()
{
int cust;
vector<int>floor;
vector<vector<int>>hotel;
floor.push_back(0);
hotel.push_back(floor);
hotel[0][0]=1;
for(cust=2; ; cust++)
{
for(int i=0; i<=hotel.size(); i++)
{
if(is_perfect_square(cust+hotel[i][floor.size()]))
{
floor.push_back(0);
hotel[i][cust]=cust;
break;
}
else
{
hotel.push_back(floor);
hotel[hotel.size()][0]=cust;
}
}
}
int sum=0;
for(int a=1; a<=hotel.size(); a++)
{
for(int b=1; b<=floor.size(); b++)
{
if(pow(a-1,2)+pow(b-1,2)==14234886498625)
sum+=hotel[a-1][b-1];
}
}
cout<<sum<<endl;
system("pause");
return 0;
}
bool is_perfect_square(int n)
{
int root=floor(sqrt(n));
return n == root * root;
}
你需要is_perfect_square函数中的“floor”吗? – shaoyl85
另外,'for(int i = 0; i <= hotel.size(); i ++)'是无效的,因为您正在访问下面的[hotel] [hotel]。下标的范围从0到hotel.size() - 1 – shaoyl85