/** * @brief Codeforces Round #275 (Div. 2) b * @file b.cpp * @author 面码 * @created 2014/12/11 18:09 * @edited 2014/12/11 18:09 * @type math binary search * * */#include #include #include #include #include #include #include #include #include using namespace std;#define max(a, b) ((a) > (b) ? (a) : (b))#define min(a, b) ((a) > (b) ? (b) : (a)) #define abs(a) ((a) > 0 ? (a) : (0 - (a)))#define CLR(vec) memset(vec, 0, sizeof(vec))#ifdef DEBUGifstream in;ofstream out;#define CIN in#define COUT out#else#define CIN cin#define COUT cout#endif#define MAXN (2e9 + 10)typedef long long int ll;ll lft, rht, mid;ll cnt1, cnt2, x, y, z;ll i, j, k;ll need1, need2;int main(void){ ios_base::sync_with_stdio(0);#ifdef DEBUG CIN.open("./in", ios::in); COUT.open("./out", ios::out);#endif CIN >> cnt1 >> cnt2 >> x >> y; z = x*y; lft = 2; rht = MAXN; while(lft
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