Submission #1314459


Source Code Expand

#include <cstdio>

long long ex2[63];
long long A,B;
long long askzero(long long minv,int dig) {
	//(minv), ... , 111..1 at least one
	minv=(minv&(ex2[dig]-1));
	long long ret=1;
	for(int i=dig-1;i>=0;i--) {
		if(minv&ex2[i]) {
		} else {
			ret+=ex2[i];
		}
	}
	if(minv==0) ret--;
	return ret;
}
int main() {
	ex2[0]=1;
	for(int i=1;i<62;i++) ex2[i]=ex2[i-1]*2;
	scanf("%lld%lld",&A,&B);
	if(A==B) {
		printf("1\n");
		return 0;
	}
	long long sol=0;
	for(int dig=61;dig>=0;dig--) {
		if((A&ex2[dig])!=(B&ex2[dig])) {
			if(dig==0) {
				printf("2\n");
				return 0;
			}
			//printf("%lld %lld %d\n",A,B,dig);
			//different
			//dig==0: continue
			sol+=askzero(A&(ex2[dig]-1),dig);
			if((A&(ex2[dig]-1))==0) sol++;
			//dig==1
			int dig2=dig-1;
			while(1) {
				if(B&ex2[dig2]) break;
				dig2--;
				if(dig2==-1) break;
			}
			A=(A&(ex2[dig]-1));
			if(dig2<0) {
				sol+=askzero(A,dig)+1;
			} else if(A<=ex2[dig2+1]-1) {
				sol+=ex2[dig];
			} else {
				sol+=askzero(A,dig);
				sol+=ex2[dig2+1];
			}
			//sol+=ex2[dig2+1]*(askzero((A>>(dig2+1)),dig-dig2-1)+1);
			break;
		}
	}
	printf("%lld\n",sol);
	return 0;
}

Submission Info

Submission Time
Task D - A or...or B Problem
User phidnight
Language C++14 (GCC 5.4.1)
Score 900
Code Size 1188 Byte
Status AC
Exec Time 1 ms
Memory 128 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:21:25: 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 / 0 900 / 900
Status
AC × 3
AC × 59
Set Name Test Cases
Sample s1.txt, s2.txt, s3.txt
All 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, 25.txt, 26.txt, 27.txt, 28.txt, 29.txt, 30.txt, 31.txt, 32.txt, 33.txt, 34.txt, 35.txt, 36.txt, 37.txt, 38.txt, 39.txt, 40.txt, 41.txt, 42.txt, 43.txt, 44.txt, 45.txt, 46.txt, 47.txt, 48.txt, 49.txt, 50.txt, 51.txt, 52.txt, 53.txt, 54.txt, 55.txt, 56.txt, s1.txt, s2.txt, s3.txt
Case Name Status Exec Time Memory
01.txt AC 0 ms 128 KB
02.txt AC 0 ms 128 KB
03.txt AC 0 ms 128 KB
04.txt AC 0 ms 128 KB
05.txt AC 0 ms 128 KB
06.txt AC 0 ms 128 KB
07.txt AC 0 ms 128 KB
08.txt AC 0 ms 128 KB
09.txt AC 0 ms 128 KB
10.txt AC 0 ms 128 KB
11.txt AC 0 ms 128 KB
12.txt AC 1 ms 128 KB
13.txt AC 1 ms 128 KB
14.txt AC 0 ms 128 KB
15.txt AC 0 ms 128 KB
16.txt AC 0 ms 128 KB
17.txt AC 0 ms 128 KB
18.txt AC 0 ms 128 KB
19.txt AC 0 ms 128 KB
20.txt AC 0 ms 128 KB
21.txt AC 0 ms 128 KB
22.txt AC 0 ms 128 KB
23.txt AC 0 ms 128 KB
24.txt AC 1 ms 128 KB
25.txt AC 1 ms 128 KB
26.txt AC 1 ms 128 KB
27.txt AC 1 ms 128 KB
28.txt AC 0 ms 128 KB
29.txt AC 1 ms 128 KB
30.txt AC 0 ms 128 KB
31.txt AC 0 ms 128 KB
32.txt AC 0 ms 128 KB
33.txt AC 1 ms 128 KB
34.txt AC 1 ms 128 KB
35.txt AC 1 ms 128 KB
36.txt AC 1 ms 128 KB
37.txt AC 1 ms 128 KB
38.txt AC 1 ms 128 KB
39.txt AC 1 ms 128 KB
40.txt AC 1 ms 128 KB
41.txt AC 1 ms 128 KB
42.txt AC 1 ms 128 KB
43.txt AC 0 ms 128 KB
44.txt AC 1 ms 128 KB
45.txt AC 0 ms 128 KB
46.txt AC 1 ms 128 KB
47.txt AC 0 ms 128 KB
48.txt AC 0 ms 128 KB
49.txt AC 0 ms 128 KB
50.txt AC 0 ms 128 KB
51.txt AC 0 ms 128 KB
52.txt AC 0 ms 128 KB
53.txt AC 0 ms 128 KB
54.txt AC 1 ms 128 KB
55.txt AC 0 ms 128 KB
56.txt AC 0 ms 128 KB
s1.txt AC 0 ms 128 KB
s2.txt AC 0 ms 128 KB
s3.txt AC 0 ms 128 KB