func_code_string: #include <bits/stdc++.h>   using namespace std;   long long n, m, k;   long long read() {     long long s = 0, f = 1;     char ch = getchar();     while (ch <  0  || ch >  9 ) {       if (ch ==  - ) f = -1;       ch = getchar();     }     while (ch >=  0  && ch <=  9 ) {       s = s * 10 + ch -  0 ;       ch = getchar();     }     return s * f;   }   inline void print(long long *f, long long len) {     for (long long i = 0; i < len; i++) printf( %lld  , f[i]);     puts(  );   }   long long a[101010];   long long pw[101010];   long long cnt[101010];   long long dp[101010];   const long long mod = 1e9 + 7;   signed main() {     n = read();     pw[0] = 1;     for (long long i = 1, iend = n; i <= iend; ++i)       a[i] = read(), pw[i] = (pw[i - 1] * 2) % mod, cnt[a[i]]++;     for (long long i = 100000, iend = 1; i >= iend; --i) {       long long sum = 0;       for (long long j = i; j <= 100000; j += i) sum += cnt[j];       dp[i] = pw[sum] - 1;       for (long long j = i * 2; j <= 100000; j += i)         dp[i] += mod, dp[i] -= dp[j], dp[i] %= mod;     }     cout << dp[1];   }   