当你在C++中遇到错误 'unordered_map' in namespace 'std' does not name a template type 时,这通常意味着编译器无法识别 std::unordered_map。这个问题可能由几个不同的原因引起。以下是一些可能的解决方案,你可以按照这些步骤逐一排查: 确认已包含必要的头文件: std::unordered_map 需要包含头文件 <unord...
#include<string> #include<unordered_map> usingnamespacestd; voidIs(string str){ unordered_map<char,int>map; for(charch:str){ map[ch]++; } if(map[str[0]]==3||map[str[1]]==3) cout<<"Yes"<<endl; else cout<<"No"<<endl; } intmain(){ intn; cin>>n; for(inti=0;i<n;i...
const int MOD = 1e9 + 7;定义了一个常数,用于结果取模,以防止溢出。 int T;用于存储测试用例的数量。 string s;存储输入字符串。 int n;存储状态转移的步数或长度。 unordered_map<char, int> mp;用于将字符映射到整数,以便后续处理。 vector<unordered_map<int, int>> dp;为动态规划表,存储中间计算结果。
简介:解决办法:error: ‘unordered_map’ in namespace ‘std’ does not name a template type 加上编译选项:
解决办法:error: ‘unordered_map’ in namespace ‘std’ does not name a template type,加上编译选项:g++-std=c++11
./include/bmnn_utils.h:114:10: error: ‘unordered_map’ in namespace‘std’ does not name a template type std::unordered_map<std::string, bm_tensor_t*> m_mapInputs; ^~~~ .//include/bmnn_utils.h:115:10: error: ‘unordered_map’ in namespace ‘std’ does not name a template...
Since decoding complexity is proportional to the number of trellis states and branches, this tends to become excessively computationally expensive. 3.4.2 STBC Space-time block codes, as the name suggests, are block rather than trellis-based. In their best known form they avoid the complexity ...
#include<unordered_map> #include<algorithm> using namespace std; int solution(string &S) { unordered_map<char, int> char_map; for (char c : S) { if (c == 'B' || c == 'A' || c == 'N') char_map[c] += 2; else if (c == 'L' || c == 'O') char_map[c] +=...
Complexity of Systems The system complexity levels are Simple, Complicated and Complex. The level of complexity is determined by the accessibility of knowledge about the relations among the system elements, i.e. if cause and effect is clear or complicated and thus predictable, or if effect is on...
unordered_map<char,int>mp;// 字符到其唯一索引的映射 vector<unordered_map<int,int>>dp;// DP数组,存储状态结果 MOD是用来避免整型溢出的大质数。 T,s,n用于输入处理。 mp将字符映射到整数索引,以便后续处理。 dp是动态规划表格,用于缓存计算过的状态以提高效率。