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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 | 0ms | 3692kb | C++23 | 1.1kb | 2024-08-09 02:07:01 | 2024-08-09 02:07:01 |
Judging History
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";
}
詳細信息
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