답안 #48370

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
48370	2018-05-12T09:22:14 Z	BThero	Boat (APIO16_boat)	C++17	9 / 100	3 ms	636 KB

boat

// Why am I so stupid? :c
#include <bits/stdc++.h>

#define pb push_back
#define mp make_pair

#define all(x) (x).begin(), (x).end()

#define fi first
#define se second

typedef long long ll;

using namespace std;

const int mod = 1e9+7;

int l[505], r[505];

int dp[505];

int ans;

int n;

void addMod(int &a, int b) {
    a += b;

    if (mod <= a) {
        a -= mod;
    }
}

void solve() {
    scanf("%d", &n);

    for (int i = 1; i <= n; ++i) {
        scanf("%d %d", &l[i], &r[i]);
    }

    for (int i = 1; i <= n; ++i) {
        dp[i] = 1;

        for (int j = 1; j < i; ++j) {
            if (l[j] < l[i]) {
                addMod(dp[i], dp[j]);
            }
        }
    }

    for (int i = 1; i <= n; ++i) {
        addMod(ans, dp[i]);
    }

    printf("%d\n", ans);
}

int main() {
#ifdef BThero
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif // BThero

    int tt = 1;

    while (tt--) {
        solve();
    }

    return 0;
}

Compilation message

boat.cpp: In function 'void solve()':
boat.cpp:35:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
boat.cpp:38:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &l[i], &r[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1

9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	248 KB	Output is correct
2	Correct	2 ms	356 KB	Output is correct
3	Correct	2 ms	432 KB	Output is correct
4	Correct	2 ms	636 KB	Output is correct
5	Correct	2 ms	636 KB	Output is correct
6	Correct	2 ms	636 KB	Output is correct
7	Correct	2 ms	636 KB	Output is correct
8	Correct	2 ms	636 KB	Output is correct
9	Correct	2 ms	636 KB	Output is correct
10	Correct	2 ms	636 KB	Output is correct
11	Correct	2 ms	636 KB	Output is correct
12	Correct	2 ms	636 KB	Output is correct
13	Correct	2 ms	636 KB	Output is correct
14	Correct	2 ms	636 KB	Output is correct
15	Correct	2 ms	636 KB	Output is correct
16	Correct	2 ms	636 KB	Output is correct
17	Correct	2 ms	636 KB	Output is correct
18	Correct	2 ms	636 KB	Output is correct
19	Correct	2 ms	636 KB	Output is correct
20	Correct	3 ms	636 KB	Output is correct

Subtask #2

0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	248 KB	Output is correct
2	Correct	2 ms	356 KB	Output is correct
3	Correct	2 ms	432 KB	Output is correct
4	Correct	2 ms	636 KB	Output is correct
5	Correct	2 ms	636 KB	Output is correct
6	Correct	2 ms	636 KB	Output is correct
7	Correct	2 ms	636 KB	Output is correct
8	Correct	2 ms	636 KB	Output is correct
9	Correct	2 ms	636 KB	Output is correct
10	Correct	2 ms	636 KB	Output is correct
11	Correct	2 ms	636 KB	Output is correct
12	Correct	2 ms	636 KB	Output is correct
13	Correct	2 ms	636 KB	Output is correct
14	Correct	2 ms	636 KB	Output is correct
15	Correct	2 ms	636 KB	Output is correct
16	Correct	2 ms	636 KB	Output is correct
17	Correct	2 ms	636 KB	Output is correct
18	Correct	2 ms	636 KB	Output is correct
19	Correct	2 ms	636 KB	Output is correct
20	Correct	3 ms	636 KB	Output is correct
21	Incorrect	2 ms	636 KB	Output isn't correct
22	Halted	0 ms	0 KB	-

Subtask #3

0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	2 ms	636 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #4

0 / 42.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	248 KB	Output is correct
2	Correct	2 ms	356 KB	Output is correct
3	Correct	2 ms	432 KB	Output is correct
4	Correct	2 ms	636 KB	Output is correct
5	Correct	2 ms	636 KB	Output is correct
6	Correct	2 ms	636 KB	Output is correct
7	Correct	2 ms	636 KB	Output is correct
8	Correct	2 ms	636 KB	Output is correct
9	Correct	2 ms	636 KB	Output is correct
10	Correct	2 ms	636 KB	Output is correct
11	Correct	2 ms	636 KB	Output is correct
12	Correct	2 ms	636 KB	Output is correct
13	Correct	2 ms	636 KB	Output is correct
14	Correct	2 ms	636 KB	Output is correct
15	Correct	2 ms	636 KB	Output is correct
16	Correct	2 ms	636 KB	Output is correct
17	Correct	2 ms	636 KB	Output is correct
18	Correct	2 ms	636 KB	Output is correct
19	Correct	2 ms	636 KB	Output is correct
20	Correct	3 ms	636 KB	Output is correct
21	Incorrect	2 ms	636 KB	Output isn't correct
22	Halted	0 ms	0 KB	-