Submission #993350
Source Code Expand
#include<cstdio> #include<algorithm> using namespace std; const long long mod = 1000000007; long long dp[330][330][2][2]; int N, M; long long solve(){ dp[1][0][0][0] = 1; int t = 0; for(int i = 0; i < M; ++i){ for(int x = 0; x < 330; ++x) for(int y = 0; y < 330; ++y){ for(int z = 0; z < 2; ++z) dp[x][y][z][t ^ 1] = 0; } for(int x = 0; x <= N; ++x){ for(int y = 0; y <= N; ++y){ dp[x][y][0][1 - t] += dp[x][y][0][t] * x; dp[x][y][0][1 - t] %= mod; dp[x][y + 1][1][1 - t] += dp[x][y][0][t] * (N - x); dp[x][y + 1][1][1 - t] %= mod; if(x + y <= N){ dp[x + y][0][0][1 - t] += dp[x][y][1][t] * x; dp[x + y][0][0][1 - t] %= mod; } dp[x][y][1][1 - t] += dp[x][y][1][t] * y; dp[x][y][1][1 - t] %= mod; dp[x][y + 1][1][1 - t] += dp[x][y][1][t] * (N - x - y); dp[x][y + 1][1][1 - t] %= mod; } } t ^= 1; } long long tmp = dp[N][0][0][t]; tmp %= mod; tmp += mod; tmp %= mod; return tmp; } int main(){ scanf("%d%d", &N, &M); long long ans = solve(); printf("%lld\n", ans); return 0; }
Submission Info
Submission Time | |
---|---|
Task | F - Road of the King |
User | wo01 |
Language | C++14 (GCC 5.4.1) |
Score | 1000 |
Code Size | 1115 Byte |
Status | AC |
Exec Time | 303 ms |
Memory | 3584 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:45:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &N, &M); ^
Judge Result
Set Name | sample | all | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 1000 / 1000 | ||||
Status |
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Set Name | Test Cases |
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sample | sample-01.txt, sample-02.txt, sample-03.txt |
all | sample-01.txt, sample-02.txt, sample-03.txt, 01-01.txt, 01-02.txt, 01-03.txt, 01-04.txt, 01-05.txt, 01-06.txt, 01-07.txt, 01-08.txt, 01-09.txt, 01-10.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
01-01.txt | AC | 5 ms | 3584 KB |
01-02.txt | AC | 5 ms | 3584 KB |
01-03.txt | AC | 54 ms | 3584 KB |
01-04.txt | AC | 6 ms | 3584 KB |
01-05.txt | AC | 54 ms | 3584 KB |
01-06.txt | AC | 76 ms | 3584 KB |
01-07.txt | AC | 286 ms | 3584 KB |
01-08.txt | AC | 300 ms | 3584 KB |
01-09.txt | AC | 302 ms | 3584 KB |
01-10.txt | AC | 303 ms | 3584 KB |
sample-01.txt | AC | 5 ms | 3584 KB |
sample-02.txt | AC | 117 ms | 3584 KB |
sample-03.txt | AC | 154 ms | 3584 KB |