Submission #6420942


Source Code Expand

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll op(ll n) {
	ll k = n/2;
	if(n%2) {
		return k*(k+1);
	} else {
		return k*k;
	}
}
ll get(ll val) {
	ll s = 0, e = 3e9;
	ll ls = 0;
	while(s <= e) {
		ll m = (s+e)/2;
		if(op(m) >= val) {
			e = m-1;
		} else {
			ls = m;
			s = m+1;
		}
	}
	return ls;
}
int main() {
	ll q;
	scanf("%lld",&q);
	while(q--) {
		ll a,b;
		scanf("%lld %lld",&a,&b);
		ll tot = a*b;
		ll res = get(tot)-2;
		if(a == b) {res = 2*a-2;}
		printf("%lld\n",res);
	}
}

Submission Info

Submission Time
Task D - Worst Case
User wwdd
Language C++14 (GCC 5.4.1)
Score 700
Code Size 547 Byte
Status AC
Exec Time 3 ms
Memory 384 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:28:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld",&q);
                  ^
./Main.cpp:31:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld %lld",&a,&b);
                           ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 700 / 700
Status
AC × 1
AC × 12
Set Name Test Cases
Sample s1.txt
All 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, s1.txt
Case Name Status Exec Time Memory
01.txt AC 3 ms 384 KB
02.txt AC 1 ms 256 KB
03.txt AC 1 ms 256 KB
04.txt AC 1 ms 256 KB
05.txt AC 1 ms 256 KB
06.txt AC 1 ms 256 KB
07.txt AC 1 ms 256 KB
08.txt AC 1 ms 256 KB
09.txt AC 1 ms 256 KB
10.txt AC 1 ms 256 KB
11.txt AC 1 ms 256 KB
s1.txt AC 1 ms 256 KB