QOJ.ac

QOJ

ID题目提交者结果用时内存语言文件大小提交时间测评时间
#510336#9158. 分数hypeskynick#50 0ms3692kbC++231.1kb2024-08-09 02:07:012024-08-09 02:07:01

Judging History

你现在查看的是最新测评结果

  • [2024-08-09 02:07:01]
  • 评测
  • 测评结果:50
  • 用时:0ms
  • 内存:3692kb
  • [2024-08-09 02:07:01]
  • 提交

answer

// Source: https://usaco.guide/general/io

#include <bits/stdc++.h>
using namespace std;
int n,m,ans=0;
bool valid(int x, int y){
	if(x/y==0)return valid(y,x);
	if(y<1||x<2*y)return false;
	if(y==1)return (x%2==0);
	return valid(x%(2*y),y);
}
void dfs2(int a, int b, int c, int d, int k){
	int x=(n-b)/a;
	int y=n;
	if(c!=0)y=(m-d)/c;
	ans+=max(0,min(x,y)-k+1)+max(0,(m-b)/a-k+1);
	int ptr=1;
	while(true){
		int num=2*a*ptr+c;
		int denom=2*b*ptr+d;
		if(1ll*num*max(k,ptr+1)+denom>n){
			break;
		}
		dfs2(num,denom,a,b,max(k,ptr+1));
		ptr++;
	}
}
void dfs1(int a, int b, int c){
	for(int i=1;;i++){
		int d=2*i*a+b;
		if(2*d*max(i,c)+a>n)break;
		dfs1(d,a,max(i,c));
	}
	dfs2(2*a,b,0,a,c);
}
int main() {
	//just brute force simulation
	//find sols for (ax+b)/(cx+d)
	cin >> n >> m;
	if(n<m)swap(n,m);
	for(int i=1;4*i+i<n;i++){
		dfs1(2*i,1,i);
	}
	dfs2(2,0,0,1,1);
	// int res=0;
	// for (int i =1;i<=n;i++){
	// 	for(int j=1;j<=m;j++){
	// 		if(gcd(i,j)!=1)continue;
	// 		if(valid(i,j))res++;
	// 	}
	// }
	// cout << res <<"\n";
	cout << ans << "\n";
}

详细


Pretests

Pretest #1:

score: 5
Accepted
time: 0ms
memory: 3672kb

input:

99 99

output:

406

result:

ok 1 number(s): "406"

Pretest #2:

score: 5
Accepted
time: 0ms
memory: 3604kb

input:

98 97

output:

405

result:

ok 1 number(s): "405"

Pretest #3:

score: 5
Accepted
time: 0ms
memory: 3592kb

input:

99 96

output:

396

result:

ok 1 number(s): "396"

Pretest #4:

score: 5
Accepted
time: 0ms
memory: 3536kb

input:

995 977

output:

11153

result:

ok 1 number(s): "11153"

Pretest #5:

score: 5
Accepted
time: 0ms
memory: 3600kb

input:

991 990

output:

11220

result:

ok 1 number(s): "11220"

Pretest #6:

score: 5
Accepted
time: 0ms
memory: 3684kb

input:

976 968

output:

10900

result:

ok 1 number(s): "10900"

Pretest #7:

score: 5
Accepted
time: 0ms
memory: 3596kb

input:

7602 7864

output:

215706

result:

ok 1 number(s): "215706"

Pretest #8:

score: 5
Accepted
time: 0ms
memory: 3684kb

input:

7959 7735

output:

220256

result:

ok 1 number(s): "220256"

Pretest #9:

score: 5
Accepted
time: 0ms
memory: 3608kb

input:

7878 7863

output:

221162

result:

ok 1 number(s): "221162"

Pretest #10:

score: 5
Accepted
time: 0ms
memory: 3612kb

input:

7788 7658

output:

215323

result:

ok 1 number(s): "215323"

Pretest #11:

score: 0
Runtime Error

input:

95399 99767

output:


result:


Pretest #12:

score: 0
Runtime Error

input:

98051 99642

output:


result:


Pretest #13:

score: 0
Runtime Error

input:

95624 96007

output:


result:


Pretest #14:

score: 0
Runtime Error

input:

99208 98047

output:


result:


Pretest #15:

score: 0
Runtime Error

input:

997417 967722

output:


result:


Pretest #16:

score: 0
Runtime Error

input:

987807 956529

output:


result:


Pretest #17:

score: 0
Runtime Error

input:

971654 984345

output:


result:


Pretest #18:

score: 0
Time Limit Exceeded

input:

7892259 7983727

output:


result:


Pretest #19:

score: 0
Time Limit Exceeded

input:

7937869 29796968

output:


result:


Pretest #20:

score: 0
Time Limit Exceeded

input:

29717543 29510173

output:


result:



Final Tests

Test #1:

score: 5
Accepted
time: 0ms
memory: 3688kb

input:

96 98

output:

396

result:

ok 1 number(s): "396"

Test #2:

score: 5
Accepted
time: 0ms
memory: 3616kb

input:

100 99

output:

408

result:

ok 1 number(s): "408"

Test #3:

score: 5
Accepted
time: 0ms
memory: 3520kb

input:

99 99

output:

406

result:

ok 1 number(s): "406"

Test #4:

score: 5
Accepted
time: 0ms
memory: 3612kb

input:

963 951

output:

10634

result:

ok 1 number(s): "10634"

Test #5:

score: 5
Accepted
time: 0ms
memory: 3628kb

input:

958 974

output:

10795

result:

ok 1 number(s): "10795"

Test #6:

score: 5
Accepted
time: 0ms
memory: 3624kb

input:

966 990

output:

11003

result:

ok 1 number(s): "11003"

Test #7:

score: 5
Accepted
time: 0ms
memory: 3556kb

input:

7958 7947

output:

224482

result:

ok 1 number(s): "224482"

Test #8:

score: 5
Accepted
time: 0ms
memory: 3560kb

input:

7623 7730

output:

213444

result:

ok 1 number(s): "213444"

Test #9:

score: 5
Accepted
time: 0ms
memory: 3604kb

input:

7845 7783

output:

218916

result:

ok 1 number(s): "218916"

Test #10:

score: 5
Accepted
time: 0ms
memory: 3692kb

input:

7881 7773

output:

219451

result:

ok 1 number(s): "219451"

Test #11:

score: 0
Runtime Error

input:

99414 98698

output:


result:


Test #12:

score: 0
Runtime Error

input:

98249 96148

output:


result:


Test #13:

score: 0
Runtime Error

input:

99003 96832

output:


result:


Test #14:

score: 0
Runtime Error

input:

98266 96030

output:


result:


Test #15:

score: 0
Runtime Error

input:

968207 958885

output:


result:


Test #16:

score: 0
Runtime Error

input:

959846 998397

output:


result:


Test #17:

score: 0
Runtime Error

input:

965821 972280

output:


result:


Test #18:

score: 0
Time Limit Exceeded

input:

7855098 7962479

output:


result:


Test #19:

score: 0
Time Limit Exceeded

input:

7841076 29648718

output:


result:


Test #20:

score: 0
Time Limit Exceeded

input:

29365129 29012208

output:


result: