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  1. /*
  2.     author:  Maksim1744
  3.     created: 07.03.2022 13:26:02
  4. */
  5.  
  6. #include "bits/stdc++.h"
  7. using namespace std;
  8.  
  9. const int mod = 998244353;
  10.  
  11. mt19937_64 rng(123456);
  12. long long rnd (long long l, long long r) {
  13. 	return (long long)(rng() % (r - l + 1)) + l;
  14. }
  15.  
  16. int main() {
  17.     vector<int> f = {1};
  18.     for (int i = 1; i <= 2e5 + 20; ++i)
  19.         f.push_back(f.back() * 1ll * i % mod);
  20.  
  21.     long long its = 0;
  22.     auto start_time = clock();
  23.     while (true) {
  24.         int a = rnd(1, 1e5);
  25.         int b = rnd(1, 1e5);
  26.         if ((++its) % 1000000 == 0) {
  27.             auto delta = (double)(clock() - start_time) / CLOCKS_PER_SEC;
  28.             cerr << fixed << setprecision(3) << '\r';
  29.             cerr << its << ' ' << delta << ' ' << delta / its * 1e9;
  30.         }
  31.         if (f[a] * 1ll * f[b] % mod == f[a + b]) {
  32.             cerr << endl;
  33.             cout << a << ' ' << b << endl;
  34.             break;
  35.         }
  36.     }
  37.  
  38.     return 0;
  39. }
  40.  
Time limit exceeded #stdin #stdout #stderr 5s 5476KB
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stdin
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Standard input is empty
stdout
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Standard output is empty
stderr
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1000000 0.027 26.582
2000000 0.053 26.601
3000000 0.081 26.869
4000000 0.106 26.606
5000000 0.133 26.547
6000000 0.159 26.444
7000000 0.184 26.352
8000000 0.210 26.281
9000000 0.236 26.257
10000000 0.263 26.276
11000000 0.296 26.913
12000000 0.326 27.156
13000000 0.352 27.043
14000000 0.377 26.946
15000000 0.403 26.868
16000000 0.429 26.794
17000000 0.454 26.728
18000000 0.480 26.690
19000000 0.507 26.666
20000000 0.532 26.624
21000000 0.558 26.593
22000000 0.584 26.557
23000000 0.611 26.544
24000000 0.641 26.717
25000000 0.674 26.951
26000000 0.700 26.935
27000000 0.726 26.893
28000000 0.752 26.863
29000000 0.778 26.827
30000000 0.804 26.798
31000000 0.830 26.770
32000000 0.856 26.745
33000000 0.882 26.716
34000000 0.907 26.688
35000000 0.933 26.664
36000000 0.959 26.647
37000000 0.986 26.644
38000000 1.017 26.761
39000000 1.049 26.903
40000000 1.077 26.913
41000000 1.102 26.886
42000000 1.129 26.871
43000000 1.154 26.846
44000000 1.180 26.818
45000000 1.206 26.802
46000000 1.232 26.779
47000000 1.257 26.754
48000000 1.284 26.740
49000000 1.309 26.721
50000000 1.335 26.703
51000000 1.361 26.694
52000000 1.393 26.784
53000000 1.425 26.886
54000000 1.451 26.869
55000000 1.477 26.850
56000000 1.503 26.832
57000000 1.528 26.813
58000000 1.554 26.796
59000000 1.580 26.781
60000000 1.606 26.765
61000000 1.632 26.749
62000000 1.658 26.734
63000000 1.683 26.718
64000000 1.709 26.701
65000000 1.735 26.693
66000000 1.766 26.754
67000000 1.799 26.845
68000000 1.825 26.831
69000000 1.850 26.817
70000000 1.876 26.802
71000000 1.902 26.788
72000000 1.928 26.775
73000000 1.954 26.762
74000000 1.979 26.749
75000000 2.005 26.736
76000000 2.031 26.724
77000000 2.057 26.713
78000000 2.083 26.702
79000000 2.110 26.713
80000000 2.142 26.779
81000000 2.175 26.853
82000000 2.201 26.842
83000000 2.227 26.829
84000000 2.253 26.818
85000000 2.279 26.808
86000000 2.304 26.796
87000000 2.330 26.785
88000000 2.356 26.774
89000000 2.382 26.763
90000000 2.408 26.752
91000000 2.434 26.744
92000000 2.460 26.735
93000000 2.486 26.727
94000000 2.517 26.780
95000000 2.549 26.828
96000000 2.574 26.817
97000000 2.600 26.806
98000000 2.626 26.798
99000000 2.652 26.789
100000000 2.678 26.779
101000000 2.704 26.770
102000000 2.730 26.760
103000000 2.755 26.750
104000000 2.781 26.741
105000000 2.807 26.732
106000000 2.833 26.723
107000000 2.859 26.720
108000000 2.891 26.767
109000000 2.922 26.804
110000000 2.948 26.797
111000000 2.973 26.788
112000000 2.999 26.781
113000000 3.025 26.772
114000000 3.051 26.763
115000000 3.077 26.755
116000000 3.103 26.746
117000000 3.131 26.760
118000000 3.157 26.753
119000000 3.183 26.745
120000000 3.209 26.745
121000000 3.240 26.780
122000000 3.274 26.833
123000000 3.300 26.825
124000000 3.326 26.821
125000000 3.352 26.815
126000000 3.378 26.807
127000000 3.403 26.799
128000000 3.429 26.792
129000000 3.455 26.784
130000000 3.481 26.777
131000000 3.507 26.769
132000000 3.533 26.761
133000000 3.558 26.753
134000000 3.585 26.751
135000000 3.617 26.792
136000000 3.649 26.832
137000000 3.675 26.825
138000000 3.702 26.824
139000000 3.728 26.818
140000000 3.754 26.812
141000000 3.780 26.805
142000000 3.805 26.799
143000000 3.831 26.794
144000000 3.858 26.789
145000000 3.883 26.783
146000000 3.909 26.776
147000000 3.935 26.771
148000000 3.962 26.767
149000000 3.994 26.806
150000000 4.026 26.838
151000000 4.052 26.837
152000000 4.079 26.833
153000000 4.104 26.826
154000000 4.130 26.820
155000000 4.156 26.813
156000000 4.185 26.829
157000000 4.211 26.824
158000000 4.237 26.820
159000000 4.263 26.814
160000000 4.289 26.807
161000000 4.316 26.804
162000000 4.341 26.799
163000000 4.375 26.843
164000000 4.406 26.864
165000000 4.432 26.863
166000000 4.460 26.865
167000000 4.485 26.859
168000000 4.511 26.854
169000000 4.538 26.853
170000000 4.564 26.848
171000000 4.590 26.843
172000000 4.616 26.839
173000000 4.642 26.834
174000000 4.668 26.829
175000000 4.695 26.826
176000000 4.722 26.829
177000000 4.757 26.876
178000000 4.785 26.882
179000000 4.812 26.880
180000000 4.837 26.875
181000000 4.863 26.869
182000000 4.889 26.863
183000000 4.915 26.859
184000000 4.941 26.853
185000000 4.967 26.849
https://ideone.com/XRpbWX
language:
C++14 (gcc 8.3)
created:
2 years ago
visibility:
secret

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