oj.uz

Submission #44119

# Submission time Handle Problem Language Result Execution time Memory
44119 2018-03-30T05:04:02 Z khsoo01 Tents (JOI18_tents) C++11
100 / 100
 84 ms 71168 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll N = 3005, M = 1e9+7;

ll h, w, dt[N][N];

int main()
{
	scanf("%lld%lld",&h,&w);
	for(ll i=0;i<=w;i++) dt[0][i] = 1;
	for(ll i=1;i<=h;i++) {
		dt[i][0] = 1;
		for(ll j=1;j<=w;j++) {
			dt[i][j] = dt[i-1][j] + 4*j*dt[i-1][j-1];
			if(i >= 2) dt[i][j] += dt[i-2][j-1]*j*(i-1);
			if(j >= 2) dt[i][j] += dt[i-1][j-2]*j*(j-1)/2;
			dt[i][j] %= M;
		}
	}
	printf("%lld\n",(dt[h][w]+M-1)%M);
}

Compilation message

tents.cpp: In function 'int main()':
tents.cpp:10:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld",&h,&w);
  ~~~~~^~~~~~~~~~~~~~~~~~

Subtask #1
48.0 / 48.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 560 KB Output is correct
4 Correct 2 ms 1328 KB Output is correct
5 Correct 2 ms 1328 KB Output is correct
6 Correct 2 ms 1540 KB Output is correct
7 Correct 2 ms 1540 KB Output is correct
8 Correct 2 ms 1540 KB Output is correct
9 Correct 2 ms 1540 KB Output is correct
10 Correct 3 ms 1948 KB Output is correct
11 Correct 2 ms 1948 KB Output is correct
12 Correct 3 ms 2564 KB Output is correct

Subtask #2
52.0 / 52.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 560 KB Output is correct
4 Correct 2 ms 1328 KB Output is correct
5 Correct 2 ms 1328 KB Output is correct
6 Correct 2 ms 1540 KB Output is correct
7 Correct 2 ms 1540 KB Output is correct
8 Correct 2 ms 1540 KB Output is correct
9 Correct 2 ms 1540 KB Output is correct
10 Correct 3 ms 1948 KB Output is correct
11 Correct 2 ms 1948 KB Output is correct
12 Correct 3 ms 2564 KB Output is correct
13 Correct 2 ms 2564 KB Output is correct
14 Correct 7 ms 10024 KB Output is correct
15 Correct 60 ms 55484 KB Output is correct
16 Correct 5 ms 55484 KB Output is correct
17 Correct 15 ms 55484 KB Output is correct
18 Correct 19 ms 55484 KB Output is correct
19 Correct 69 ms 63216 KB Output is correct
20 Correct 56 ms 63216 KB Output is correct
21 Correct 38 ms 63216 KB Output is correct
22 Correct 41 ms 63216 KB Output is correct
23 Correct 26 ms 63216 KB Output is correct
24 Correct 84 ms 71168 KB Output is correct
25 Correct 71 ms 71168 KB Output is correct
26 Correct 76 ms 71168 KB Output is correct
27 Correct 83 ms 71168 KB Output is correct