func_code_string: #include <bits/stdc++.h>   using namespace std;   inline void read(int &data) {     data = 0;     int e = 1;     char ch = getchar();     while ((ch <  0  || ch >  9 ) && ch !=  - ) ch = getchar();     if (ch ==  - ) e = -1, ch = getchar();     while (ch >=  0  && ch <=  9 ) data = data * 10 + ch - 48, ch = getchar();     data *= e;   }   inline void read(long long &data) {     data = 0;     int e = 1;     char ch = getchar();     while ((ch <  0  || ch >  9 ) && ch !=  - ) ch = getchar();     if (ch ==  - ) e = -1, ch = getchar();     while (ch >=  0  && ch <=  9 ) data = data * 10 + ch - 48, ch = getchar();     data *= e;   }   inline void write(int data) {     if (data < 0) data = -data, putchar( - );     if (data > 9) write(data / 10);     putchar(data % 10 + 48);   }   inline void write(long long data) {     if (data < 0) data = -data, putchar( - );     if (data > 9) write(data / 10);     putchar(data % 10 + 48);   }   bool cmp(int a, int b) { return a < b; }   priority_queue<long long, vector<long long>, greater<long long> > q;   long long n, x, ans = 0;   int main() {     read(n);     for (int i = 1; i <= n; ++i) {       read(x);       if (q.empty() || q.top() > x)         q.push(x);       else {         ans += x - q.top();         q.pop();         q.push(x), q.push(x);       }     }     write(ans), puts(  );   }   