func_code_string: #include <bits/stdc++.h>   using namespace std;   map<char, int> m;   map<char, int> m1;   int main() {     long long int n = 0, d, i = 0, j = 0, l = 0, r = 0, a = 0, b = 0, c1, c2, p,                   b2, s1 = 0, t = 0, t1 = 0, y = 0, x = 0, s2 = 0, c = 0;     char ch;     cin >> a >> b >> c;     vector<int> adj[100001];     int s[3];     s[0] = a;     s[1] = b;     s[2] = c;     n = 3;     sort(s, s + n);     a = s[2];     b = s[1];     c = s[0];     if (a >= (b + c)) {       while (a >= b + c) {         t++;         c++;       }     }     if (b >= a + c) {       while (b >= a + c) {         t++;         c++;       }     }     if (c >= b + a) {       while (c >= b + a) {         t++;         b++;       }     }     cout << t << endl;     return 0;   }   