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- long long get_pow(long long a, long long b) {
- long long ans = 1;
- while (b > 1) {
- if (b % 2 == 0) {
- a *= a;
- b /= 2;
- }
- else {
- ans *= a;
- b -= 1;
- }
- }
- return ans * a % MOD;
- }
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