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Submission #124209

# Submission time Handle Problem Language Result Execution time Memory
124209 2019-07-02T16:47:01 Z AyaBenSaad Boat (APIO16_boat) C++14
9 / 100
 2000 ms 8392 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
const int MOD = 1e9 + 7;
const int M = 5e2 + 2;
const int N = 1e2 + 6;
int n, a[M], b[M];
set <int> s;
vector <int> v;
map <pair <int, int>, int> dp;

int solve (int id, int last) {
    if (id >= n) return (last != 0 ? 1 : 0);
    int &ret = dp[{id,last}];
    if (ret != 0) return ret;
    ret = solve(id+1, last);
    for (int i = max (a[id], last+1); i <= b[id]; i++) {
        ret = (1ll*ret + 1ll*solve (id+1, i)) % MOD;
    }
    return ret;
}

int main () {
    scanf("%d", &n);
    for (int i = 0; i < n; i++) {
        scanf("%d %d", &a[i], &b[i]);
        s.insert (a[i]);
        s.insert (b[i]);
    }
    for (int i : s) {
        v.push_back(i);
    }
    printf("%d\n", solve (0, 0));
}
//1 2
//2 3

Compilation message

boat.cpp: In function 'int main()':
boat.cpp:25:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
boat.cpp:27:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &a[i], &b[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 65 ms 8184 KB Output is correct
2 Correct 63 ms 8188 KB Output is correct
3 Correct 62 ms 8312 KB Output is correct
4 Correct 63 ms 8184 KB Output is correct
5 Correct 61 ms 8184 KB Output is correct
6 Correct 81 ms 8312 KB Output is correct
7 Correct 84 ms 8312 KB Output is correct
8 Correct 86 ms 8312 KB Output is correct
9 Correct 82 ms 8184 KB Output is correct
10 Correct 84 ms 8248 KB Output is correct
11 Correct 84 ms 8312 KB Output is correct
12 Correct 83 ms 8312 KB Output is correct
13 Correct 86 ms 8312 KB Output is correct
14 Correct 82 ms 8312 KB Output is correct
15 Correct 85 ms 8392 KB Output is correct
16 Correct 14 ms 2552 KB Output is correct
17 Correct 14 ms 2780 KB Output is correct
18 Correct 14 ms 2680 KB Output is correct
19 Correct 14 ms 2808 KB Output is correct
20 Correct 13 ms 2556 KB Output is correct

Subtask #2
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 65 ms 8184 KB Output is correct
2 Correct 63 ms 8188 KB Output is correct
3 Correct 62 ms 8312 KB Output is correct
4 Correct 63 ms 8184 KB Output is correct
5 Correct 61 ms 8184 KB Output is correct
6 Correct 81 ms 8312 KB Output is correct
7 Correct 84 ms 8312 KB Output is correct
8 Correct 86 ms 8312 KB Output is correct
9 Correct 82 ms 8184 KB Output is correct
10 Correct 84 ms 8248 KB Output is correct
11 Correct 84 ms 8312 KB Output is correct
12 Correct 83 ms 8312 KB Output is correct
13 Correct 86 ms 8312 KB Output is correct
14 Correct 82 ms 8312 KB Output is correct
15 Correct 85 ms 8392 KB Output is correct
16 Correct 14 ms 2552 KB Output is correct
17 Correct 14 ms 2780 KB Output is correct
18 Correct 14 ms 2680 KB Output is correct
19 Correct 14 ms 2808 KB Output is correct
20 Correct 13 ms 2556 KB Output is correct
21 Execution timed out 2059 ms 3392 KB Time limit exceeded
22 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2053 ms 256 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 65 ms 8184 KB Output is correct
2 Correct 63 ms 8188 KB Output is correct
3 Correct 62 ms 8312 KB Output is correct
4 Correct 63 ms 8184 KB Output is correct
5 Correct 61 ms 8184 KB Output is correct
6 Correct 81 ms 8312 KB Output is correct
7 Correct 84 ms 8312 KB Output is correct
8 Correct 86 ms 8312 KB Output is correct
9 Correct 82 ms 8184 KB Output is correct
10 Correct 84 ms 8248 KB Output is correct
11 Correct 84 ms 8312 KB Output is correct
12 Correct 83 ms 8312 KB Output is correct
13 Correct 86 ms 8312 KB Output is correct
14 Correct 82 ms 8312 KB Output is correct
15 Correct 85 ms 8392 KB Output is correct
16 Correct 14 ms 2552 KB Output is correct
17 Correct 14 ms 2780 KB Output is correct
18 Correct 14 ms 2680 KB Output is correct
19 Correct 14 ms 2808 KB Output is correct
20 Correct 13 ms 2556 KB Output is correct
21 Execution timed out 2059 ms 3392 KB Time limit exceeded
22 Halted 0 ms 0 KB -