#include <iostream> #include <string> #include <cstring> #include <cstdlib> #include <cstdio> #include <cmath> #include <vector> #include <stack> #include <deque> #include <queue> #include <bitset> #include <list> #include <map> #include <set> #include <iterator> #include <algorithm> #include <functional> #include <utility> #include <sstream> #include <climits> #include <cassert> #define BUG puts("here!!!"); using namespace std; const int N = 5; struct Node { int top; char elem[N]; }; void initStack(Node* S) { S->top = -1; } bool isEmpty(Node* S) { if(S->top == -1) return true; return false; } bool isFull(Node* S) { if(S->top == N-1) return true; return false; } bool push(char value, Node* S) { if(S->top == N-1) return false; S->top++; S->elem[S->top] = value; return true; } bool pop(Node* S) { if(S->top == -1) return false; S->top--; return true; } char getTop(Node* S) { if(S->top > -1) return S->elem[S->top]; return '#'; } int main() { return 0; }