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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#528106#9158. 分数sumi007#50 1425ms3688kbC++141.2kb2024-08-23 08:51:492024-08-23 08:51:50

Judging History

你现在查看的是最新测评结果

  • [2024-08-23 08:51:50]
  • 评测
  • 测评结果:50
  • 用时:1425ms
  • 内存:3688kb
  • [2024-08-23 08:51:49]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int N = 1e7+1;
int n,m,tot,pri[N],vis[N],phi[N];
ll s[N];
void prework(){
    for(int i=2;i<N;i++){
        if(!vis[i]) vis[i] = 1,pri[++tot] = i,phi[i] = i-1;
        for(int j=1;j<=tot && 1ll*pri[j]*i<N;j++){
            vis[pri[j]*i] = 1;
            if(i%pri[j]==0){
                phi[i*pri[j]] = pri[j]*phi[i];
                break;
            }
            phi[i*pri[j]] = phi[pri[j]]*phi[i];
        }
    }
}
int f(int i,int j){
    if(i==0 && j==1) return 1; 
    if(__gcd(i,j)!=1) return 0;
    if(2*i<=j) return f(j-(j/(2*i))*2*i,i);
    else if(i>=2*j) return f(i-(i/(2*j))*2*j,j);
    return 0;
}
int main(){
    // cin.tie(0),cout.tie(0);
    // ios::sync_with_stdio(0);
    // prework();
    cin >> n >> m;
    int ans = 0;
    for(int i=1;i<=n;i++){
        for(int j=1;j<=i/2;j++){
            ans = (ans+f(i,j));
        }
        for(int j=2*i;j<=m;j++){
            ans = (ans+f(i,j));
        }
    }
    // cout << f(2,1) << ' ' << f(4,1) << ' ' << f(6,1) << ' ' << f(8,1) << ' ' << f(10,1) << " " << f(5,2) << ' ' << f(9,2) << ' ' << f(9,4) << '\n';
    cout << ans;
    return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Pretests

Pretest #1:

score: 5
Accepted
time: 1ms
memory: 3532kb

input:

99 99

output:

406

result:

ok 1 number(s): "406"

Pretest #2:

score: 5
Accepted
time: 0ms
memory: 3540kb

input:

98 97

output:

405

result:

ok 1 number(s): "405"

Pretest #3:

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

input:

99 96

output:

396

result:

ok 1 number(s): "396"

Pretest #4:

score: 5
Accepted
time: 17ms
memory: 3536kb

input:

995 977

output:

11153

result:

ok 1 number(s): "11153"

Pretest #5:

score: 5
Accepted
time: 18ms
memory: 3536kb

input:

991 990

output:

11220

result:

ok 1 number(s): "11220"

Pretest #6:

score: 5
Accepted
time: 17ms
memory: 3596kb

input:

976 968

output:

10900

result:

ok 1 number(s): "10900"

Pretest #7:

score: 5
Accepted
time: 1333ms
memory: 3648kb

input:

7602 7864

output:

215706

result:

ok 1 number(s): "215706"

Pretest #8:

score: 5
Accepted
time: 1376ms
memory: 3496kb

input:

7959 7735

output:

220256

result:

ok 1 number(s): "220256"

Pretest #9:

score: 5
Accepted
time: 1397ms
memory: 3604kb

input:

7878 7863

output:

221162

result:

ok 1 number(s): "221162"

Pretest #10:

score: 5
Accepted
time: 1331ms
memory: 3616kb

input:

7788 7658

output:

215323

result:

ok 1 number(s): "215323"

Pretest #11:

score: 0
Time Limit Exceeded

input:

95399 99767

output:


result:


Pretest #12:

score: 0
Time Limit Exceeded

input:

98051 99642

output:


result:


Pretest #13:

score: 0
Time Limit Exceeded

input:

95624 96007

output:


result:


Pretest #14:

score: 0
Time Limit Exceeded

input:

99208 98047

output:


result:


Pretest #15:

score: 0
Time Limit Exceeded

input:

997417 967722

output:


result:


Pretest #16:

score: 0
Time Limit Exceeded

input:

987807 956529

output:


result:


Pretest #17:

score: 0
Time Limit Exceeded

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: 1ms
memory: 3532kb

input:

96 98

output:

396

result:

ok 1 number(s): "396"

Test #2:

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

input:

100 99

output:

408

result:

ok 1 number(s): "408"

Test #3:

score: 5
Accepted
time: 1ms
memory: 3528kb

input:

99 99

output:

406

result:

ok 1 number(s): "406"

Test #4:

score: 5
Accepted
time: 17ms
memory: 3672kb

input:

963 951

output:

10634

result:

ok 1 number(s): "10634"

Test #5:

score: 5
Accepted
time: 16ms
memory: 3496kb

input:

958 974

output:

10795

result:

ok 1 number(s): "10795"

Test #6:

score: 5
Accepted
time: 17ms
memory: 3688kb

input:

966 990

output:

11003

result:

ok 1 number(s): "11003"

Test #7:

score: 5
Accepted
time: 1425ms
memory: 3688kb

input:

7958 7947

output:

224482

result:

ok 1 number(s): "224482"

Test #8:

score: 5
Accepted
time: 1324ms
memory: 3612kb

input:

7623 7730

output:

213444

result:

ok 1 number(s): "213444"

Test #9:

score: 5
Accepted
time: 1365ms
memory: 3536kb

input:

7845 7783

output:

218916

result:

ok 1 number(s): "218916"

Test #10:

score: 5
Accepted
time: 1389ms
memory: 3688kb

input:

7881 7773

output:

219451

result:

ok 1 number(s): "219451"

Test #11:

score: 0
Time Limit Exceeded

input:

99414 98698

output:


result:


Test #12:

score: 0
Time Limit Exceeded

input:

98249 96148

output:


result:


Test #13:

score: 0
Time Limit Exceeded

input:

99003 96832

output:


result:


Test #14:

score: 0
Time Limit Exceeded

input:

98266 96030

output:


result:


Test #15:

score: 0
Time Limit Exceeded

input:

968207 958885

output:


result:


Test #16:

score: 0
Time Limit Exceeded

input:

959846 998397

output:


result:


Test #17:

score: 0
Time Limit Exceeded

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: