| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 30797 |
2017-07-26T14:14:39 Z |
cdemirer |
Boat (APIO16_boat) |
C++14 |
|
2000 ms |
7476 KB |
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> llp;
typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<ii> vii;
typedef vector<vii> vvii;
#define pb(x) push_back(x)
#define mp(x, y) make_pair(x, y)
#define MOD ((ll)1e9+7)
#define safeadd(x, y) ( ( ((ll)x % MOD) + ((ll)y % MOD) ) % MOD )
#include <unordered_map>
int N;
unordered_map<int, ll> dp[500];
int A[500], B[500];
ll func(int x, int s) {
//cerr << "called: " << x << " " << s << endl;
if (dp[x][s] != 0) return dp[x][s];
ll sum = 0;
if (x < N-1) sum = safeadd(sum, func(x+1, s));
else sum = safeadd(sum, 1);
for (int i = max(s+1, A[x]); i <= B[x]; i++) {
if (x < N-1) sum = safeadd(sum, func(x+1, i));
else sum = safeadd(sum, 1);
}
dp[x][s] = sum;
//cerr << "returned: " << sum << endl;
return dp[x][s];
}
int main(int argc, char **argv) {
//freopen("input", "r", stdin);
//freopen("output", "w", stdout);
scanf("%d", &N);
for (int i = 0; i < N; i++) {
scanf("%d%d", &(A[i]), &(B[i]));
}
printf("%lld\n", safeadd(func(0, 0), -1));
return 0;
}
Compilation message
boat.cpp: In function 'int main(int, char**)':
boat.cpp:39:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &N);
^
boat.cpp:41:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d", &(A[i]), &(B[i]));
^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
29 ms |
7476 KB |
Output is correct |
| 2 |
Correct |
39 ms |
7476 KB |
Output is correct |
| 3 |
Correct |
29 ms |
7476 KB |
Output is correct |
| 4 |
Correct |
66 ms |
7476 KB |
Output is correct |
| 5 |
Correct |
56 ms |
7476 KB |
Output is correct |
| 6 |
Correct |
76 ms |
7476 KB |
Output is correct |
| 7 |
Correct |
59 ms |
7476 KB |
Output is correct |
| 8 |
Correct |
59 ms |
7476 KB |
Output is correct |
| 9 |
Correct |
76 ms |
7476 KB |
Output is correct |
| 10 |
Correct |
66 ms |
7476 KB |
Output is correct |
| 11 |
Correct |
56 ms |
7476 KB |
Output is correct |
| 12 |
Correct |
63 ms |
7476 KB |
Output is correct |
| 13 |
Correct |
43 ms |
7476 KB |
Output is correct |
| 14 |
Correct |
59 ms |
7476 KB |
Output is correct |
| 15 |
Correct |
63 ms |
7476 KB |
Output is correct |
| 16 |
Correct |
6 ms |
3508 KB |
Output is correct |
| 17 |
Correct |
9 ms |
3640 KB |
Output is correct |
| 18 |
Correct |
3 ms |
3640 KB |
Output is correct |
| 19 |
Correct |
9 ms |
3640 KB |
Output is correct |
| 20 |
Correct |
13 ms |
3508 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
29 ms |
7476 KB |
Output is correct |
| 2 |
Correct |
39 ms |
7476 KB |
Output is correct |
| 3 |
Correct |
29 ms |
7476 KB |
Output is correct |
| 4 |
Correct |
66 ms |
7476 KB |
Output is correct |
| 5 |
Correct |
56 ms |
7476 KB |
Output is correct |
| 6 |
Correct |
76 ms |
7476 KB |
Output is correct |
| 7 |
Correct |
59 ms |
7476 KB |
Output is correct |
| 8 |
Correct |
59 ms |
7476 KB |
Output is correct |
| 9 |
Correct |
76 ms |
7476 KB |
Output is correct |
| 10 |
Correct |
66 ms |
7476 KB |
Output is correct |
| 11 |
Correct |
56 ms |
7476 KB |
Output is correct |
| 12 |
Correct |
63 ms |
7476 KB |
Output is correct |
| 13 |
Correct |
43 ms |
7476 KB |
Output is correct |
| 14 |
Correct |
59 ms |
7476 KB |
Output is correct |
| 15 |
Correct |
63 ms |
7476 KB |
Output is correct |
| 16 |
Correct |
6 ms |
3508 KB |
Output is correct |
| 17 |
Correct |
9 ms |
3640 KB |
Output is correct |
| 18 |
Correct |
3 ms |
3640 KB |
Output is correct |
| 19 |
Correct |
9 ms |
3640 KB |
Output is correct |
| 20 |
Correct |
13 ms |
3508 KB |
Output is correct |
| 21 |
Execution timed out |
2000 ms |
5880 KB |
Execution timed out |
| 22 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
2000 ms |
2056 KB |
Execution timed out |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
29 ms |
7476 KB |
Output is correct |
| 2 |
Correct |
39 ms |
7476 KB |
Output is correct |
| 3 |
Correct |
29 ms |
7476 KB |
Output is correct |
| 4 |
Correct |
66 ms |
7476 KB |
Output is correct |
| 5 |
Correct |
56 ms |
7476 KB |
Output is correct |
| 6 |
Correct |
76 ms |
7476 KB |
Output is correct |
| 7 |
Correct |
59 ms |
7476 KB |
Output is correct |
| 8 |
Correct |
59 ms |
7476 KB |
Output is correct |
| 9 |
Correct |
76 ms |
7476 KB |
Output is correct |
| 10 |
Correct |
66 ms |
7476 KB |
Output is correct |
| 11 |
Correct |
56 ms |
7476 KB |
Output is correct |
| 12 |
Correct |
63 ms |
7476 KB |
Output is correct |
| 13 |
Correct |
43 ms |
7476 KB |
Output is correct |
| 14 |
Correct |
59 ms |
7476 KB |
Output is correct |
| 15 |
Correct |
63 ms |
7476 KB |
Output is correct |
| 16 |
Correct |
6 ms |
3508 KB |
Output is correct |
| 17 |
Correct |
9 ms |
3640 KB |
Output is correct |
| 18 |
Correct |
3 ms |
3640 KB |
Output is correct |
| 19 |
Correct |
9 ms |
3640 KB |
Output is correct |
| 20 |
Correct |
13 ms |
3508 KB |
Output is correct |
| 21 |
Execution timed out |
2000 ms |
5880 KB |
Execution timed out |
| 22 |
Halted |
0 ms |
0 KB |
- |
