func_code_string: #include <bits/stdc++.h>   #pragma GCC target( avx2 )   #pragma GCC optimization( O3 )   #pragma GCC optimization( unroll-loops )   using namespace std;   const int N = 1000090, M = 1000000007;   int B[N];   void up(int i, int v) {     for (; i < N; i += (i & (-i))) B[i] += v;   }   int sm(int i) {     int s = 0;     for (; i > 0; i -= (i & (-i))) s += B[i];     return s;   }   int main() {     int q, x, n;     scanf( %d %d , &n, &q);     for (int i = 0; i < n; ++i) scanf( %d , &x), up(x, 1);     for (int Q = 0; Q < q; ++Q) {       scanf( %d , &x);       if (x > 0)         up(x, 1), n++;       else {         int b = 0, e = N;         x = -1 * x;         while (b < e) {           int bw = (b + e) / 2;           int z = sm(bw);           if (z >= x)             e = bw;           else             b = bw + 1;         }         up(b, -1);         n--;       }     }     int ans = sm(N);     if (!ans)       printf( 0 );     else {       for (int i = 1; i < N; ++i)         if (sm(i) > 0) return cout << i, 0;     }   }   