void func(int a, int b, vector<vector<int, int>> &vec)

void func(int a, int b, vector<int> &vec)

void func(int (&arr)[4])                      int len = sizeof(arr) / sizeof(arr[0]);

pair<int, int> p;                    p.first              p.second                    make_pair(a, b)            {a, b}

#include <vector> vector<int> vc;          vector<int> vc(10);      vector<vector<int>> vc;   vc.push_back(str);       vc.pop_back();  vc.begin()        vc.end()            vc.front()         vc.clear();           vc.back() 마지막 요소 접근   vc.resize(N, vector<int>(M));              vc[i].push_back(str); vector<int>vc.assign(범위, 초기화할 값);   vc.insert(vc.begin() + 1, 변수 값) c.erase(vc.begin() + 1) // vc.erase(vc.begin(), vc.begin()+5) - 원하는 index값의 요소를 지움

#include <algorithm> <cmath> pow(x, y) sqrt(x) round(x) ceil(x) floor(x) precision(2)

bool cmp(vector<int> &v1, vector<int> &v2){

bool compare1(pair<int, int> a, pair<int, int> b) {

return a.first > b.first;               return a.second > b.second;

}   sort(v.begin(), v.end(), compare1);

#include <string>       tolower(int c);   toupper(int c);

str.substr(0, 1);           swap(str1, str2)            str.size();          str.find("abc");             str.erase(0, 1); string(5, '0').append(str);

getline(cin, str);          stoi(str)           to_string(n)      str.pop_back();             str.push_back(c);

isdigit(int c);              isalpha(int c);              isspace(int c);              isupper(int c);              islower(int c);

#include <queue>   queue<int> que;                  queue<pair<int, int>> que;   que.push(str);           que.front();           que.pop()       que.back(); que.size();           que.empty(); que.front().first           que.front().second                  swap(que1, que2);

#include <stack>

stack<int> stk;           stack<pair<int, int>> stk;

stk.push(str);              stk.top();                    stk.pop();                    stk.size();                    stk.empty();

stk.top().first                         stk.top().second           swap(stk1, stk2);