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OI-codes/Luogu/P1947/P1947.cpp

18 lines
347 B
C++

extern "C" int Seniorious(int);
extern "C" int Chtholly(int n, int OvO) {
int ans = 1;
int l = 1, r = n;
int mid = l + r >> 1;
while (l <= r) {
if (Seniorious(mid) >= 0) {
ans = mid;
r = mid - 1;
} else {
l = mid + 1;
}
mid = l + r >> 1;
}
return ans;
}