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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#719304#5426. Drain the Water TankXiaoYang3WA 0ms3856kbC++231.5kb2024-11-07 00:08:302024-11-07 00:08:30

Judging History

你现在查看的是最新测评结果

  • [2024-11-07 00:08:30]
  • 评测
  • 测评结果:WA
  • 用时:0ms
  • 内存:3856kb
  • [2024-11-07 00:08:30]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
ll n, m, k, ans;
const int N = 4e6 + 5;
const int P = 1e9 + 7;
void solve() {
    cin >> n;
    vector<pii> ve(n + 2);
    for (int i = 0; i < n; i++) {
        cin >> ve[i].first >> ve[i].second;
    }
    for (int i = 0; i < n; i++) {
        int pre = (i + n - 1) % n;

        int j = (i + 1) % n;
        while (ve[i].second == ve[j].second) {
            j = (j + 1) % n;
        }
        if (ve[i].second >= ve[j].second || ve[pre].second <= ve[i].second) {
            continue;
        }
        if (ve[i].second != ve[(i + 1) % n].second) {
            if (ve[i].first < ve[j].first || ve[pre].first < ve[i].first) {
                ans++;
                if (ve[pre].first < ve[i].first && ve[i].first > ve[j].first &&
                    ve[pre].second > ve[j].second) {
                    ans--;
                } else if (ve[i].first < ve[pre].first &&
                           ve[i].first < ve[j].first &&
                           ve[j].second > ve[pre].second) {
                    ans--;
                }
            }

        } else {
            if (ve[(i + 1) % n].first > ve[i].first) {
                ans++;
            }
        }
    }
    cout << ans << '\n';
}
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    int _ = 1;
    // cin >> _;
    while (_--) {
        solve();
    }
    return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 3612kb

input:

6
0 0
1 1
2 1
3 0
3 2
0 2

output:

2

result:

ok 1 number(s): "2"

Test #2:

score: 0
Accepted
time: 0ms
memory: 3772kb

input:

8
4 4
0 4
0 2
1 2
2 2
2 0
3 0
4 0

output:

1

result:

ok 1 number(s): "1"

Test #3:

score: 0
Accepted
time: 0ms
memory: 3552kb

input:

7
1 0
3 4
0 3
1 2
2 3
1 1
0 2

output:

2

result:

ok 1 number(s): "2"

Test #4:

score: 0
Accepted
time: 0ms
memory: 3808kb

input:

6
0 0
2 0
1 1
4 1
5 0
3 4

output:

2

result:

ok 1 number(s): "2"

Test #5:

score: 0
Accepted
time: 0ms
memory: 3852kb

input:

8
0 0
1 0
3 -1
3 0
1 1
4 1
5 0
3 4

output:

2

result:

ok 1 number(s): "2"

Test #6:

score: 0
Accepted
time: 0ms
memory: 3612kb

input:

5
0 0
170 0
140 30
60 30
0 70

output:

1

result:

ok 1 number(s): "1"

Test #7:

score: 0
Accepted
time: 0ms
memory: 3808kb

input:

5
0 0
170 0
140 30
60 30
0 100

output:

1

result:

ok 1 number(s): "1"

Test #8:

score: 0
Accepted
time: 0ms
memory: 3856kb

input:

5
0 0
1 2
1 5
0 2
0 1

output:

1

result:

ok 1 number(s): "1"

Test #9:

score: 0
Accepted
time: 0ms
memory: 3620kb

input:

3
0 0
100 0
0 100

output:

1

result:

ok 1 number(s): "1"

Test #10:

score: 0
Accepted
time: 0ms
memory: 3548kb

input:

3
200 0
100 100
0 0

output:

1

result:

ok 1 number(s): "1"

Test #11:

score: 0
Accepted
time: 0ms
memory: 3584kb

input:

3
50 50
100 50
100 100

output:

1

result:

ok 1 number(s): "1"

Test #12:

score: 0
Accepted
time: 0ms
memory: 3608kb

input:

3
3 0
0 4
0 0

output:

1

result:

ok 1 number(s): "1"

Test #13:

score: 0
Accepted
time: 0ms
memory: 3812kb

input:

3
10000 10000
-10000 10000
10000 9999

output:

1

result:

ok 1 number(s): "1"

Test #14:

score: 0
Accepted
time: 0ms
memory: 3608kb

input:

3
10000 10000
-10000 10000
10000 9900

output:

1

result:

ok 1 number(s): "1"

Test #15:

score: 0
Accepted
time: 0ms
memory: 3520kb

input:

3
10000 10000
9999 10000
10000 -10000

output:

1

result:

ok 1 number(s): "1"

Test #16:

score: 0
Accepted
time: 0ms
memory: 3624kb

input:

3
0 0
200 0
100 173

output:

1

result:

ok 1 number(s): "1"

Test #17:

score: 0
Accepted
time: 0ms
memory: 3560kb

input:

3
0 0
200 0
100 1

output:

1

result:

ok 1 number(s): "1"

Test #18:

score: 0
Accepted
time: 0ms
memory: 3548kb

input:

3
-10000 -10000
10000 9999
9999 10000

output:

1

result:

ok 1 number(s): "1"

Test #19:

score: 0
Accepted
time: 0ms
memory: 3488kb

input:

4
10 10
20 10
20 20
10 20

output:

1

result:

ok 1 number(s): "1"

Test #20:

score: 0
Accepted
time: 0ms
memory: 3544kb

input:

4
-10000 -10000
10000 -10000
10000 10000
-10000 10000

output:

1

result:

ok 1 number(s): "1"

Test #21:

score: 0
Accepted
time: 0ms
memory: 3616kb

input:

4
100 0
200 100
100 200
0 100

output:

1

result:

ok 1 number(s): "1"

Test #22:

score: 0
Accepted
time: 0ms
memory: 3772kb

input:

4
0 1
100 0
101 100
1 101

output:

1

result:

ok 1 number(s): "1"

Test #23:

score: 0
Accepted
time: 0ms
memory: 3624kb

input:

4
0 0
100 0
100 50
0 50

output:

1

result:

ok 1 number(s): "1"

Test #24:

score: 0
Accepted
time: 0ms
memory: 3520kb

input:

4
0 0
50 0
50 100
0 100

output:

1

result:

ok 1 number(s): "1"

Test #25:

score: 0
Accepted
time: 0ms
memory: 3584kb

input:

4
0 10
10 0
100 90
90 100

output:

1

result:

ok 1 number(s): "1"

Test #26:

score: 0
Accepted
time: 0ms
memory: 3624kb

input:

8
0 100
100 0
250 0
350 100
350 250
250 350
100 350
0 250

output:

1

result:

ok 1 number(s): "1"

Test #27:

score: 0
Accepted
time: 0ms
memory: 3548kb

input:

6
0 50
10 0
70 0
80 10
70 50
50 80

output:

1

result:

ok 1 number(s): "1"

Test #28:

score: 0
Accepted
time: 0ms
memory: 3588kb

input:

4
0 100
0 0
100 0
20 20

output:

1

result:

ok 1 number(s): "1"

Test #29:

score: 0
Accepted
time: 0ms
memory: 3560kb

input:

4
0 100
55 55
100 0
100 100

output:

1

result:

ok 1 number(s): "1"

Test #30:

score: 0
Accepted
time: 0ms
memory: 3620kb

input:

8
0 0
100 0
100 20
40 20
40 40
100 40
100 60
0 60

output:

1

result:

ok 1 number(s): "1"

Test #31:

score: 0
Accepted
time: 0ms
memory: 3548kb

input:

12
0 0
90 0
90 30
40 30
40 40
90 40
90 50
0 50
0 20
50 20
50 10
0 10

output:

1

result:

ok 1 number(s): "1"

Test #32:

score: 0
Accepted
time: 0ms
memory: 3548kb

input:

12
0 0
100 0
100 100
10 100
10 110
200 110
200 60
101 60
101 40
210 40
210 120
0 120

output:

2

result:

ok 1 number(s): "2"

Test #33:

score: 0
Accepted
time: 0ms
memory: 3620kb

input:

10
1000 0
1100 0
1200 100
1220 200
1200 110
1100 10
1000 10
900 110
880 200
900 100

output:

1

result:

ok 1 number(s): "1"

Test #34:

score: 0
Accepted
time: 0ms
memory: 3492kb

input:

16
0 0
60 0
60 70
0 70
0 20
40 20
40 50
20 50
20 40
30 40
30 30
10 30
10 60
50 60
50 10
0 10

output:

2

result:

ok 1 number(s): "2"

Test #35:

score: 0
Accepted
time: 0ms
memory: 3840kb

input:

8
0 1
100 0
5 5
200 5
105 0
205 1
205 10
0 10

output:

2

result:

ok 1 number(s): "2"

Test #36:

score: 0
Accepted
time: 0ms
memory: 3616kb

input:

8
0 1
50 0
5 5
200 5
150 0
205 1
205 10
0 10

output:

2

result:

ok 1 number(s): "2"

Test #37:

score: 0
Accepted
time: 0ms
memory: 3556kb

input:

9
99 100
100 100
99 99
301 99
300 100
301 100
201 274
200 273
199 274

output:

1

result:

ok 1 number(s): "1"

Test #38:

score: 0
Accepted
time: 0ms
memory: 3624kb

input:

15
0 0
10 0
20 0
30 0
40 0
50 0
40 10
30 20
20 30
10 40
0 50
0 40
0 30
0 20
0 10

output:

1

result:

ok 1 number(s): "1"

Test #39:

score: 0
Accepted
time: 0ms
memory: 3548kb

input:

11
0 0
100 0
90 5
80 10
70 15
60 20
50 25
40 20
30 15
20 10
10 5

output:

1

result:

ok 1 number(s): "1"

Test #40:

score: 0
Accepted
time: 0ms
memory: 3548kb

input:

8
0 0
20 30
0 60
0 50
0 40
0 30
0 20
0 10

output:

1

result:

ok 1 number(s): "1"

Test #41:

score: 0
Accepted
time: 0ms
memory: 3556kb

input:

18
0 0
20 0
40 0
60 0
80 0
100 0
120 0
120 30
120 60
120 90
120 120
80 120
40 120
0 120
0 96
0 72
0 48
0 24

output:

1

result:

ok 1 number(s): "1"

Test #42:

score: 0
Accepted
time: 0ms
memory: 3492kb

input:

15
0 0
20 0
40 0
60 0
80 0
100 0
120 0
120 120
80 120
40 120
0 120
0 96
0 72
0 48
0 24

output:

1

result:

ok 1 number(s): "1"

Test #43:

score: 0
Accepted
time: 0ms
memory: 3552kb

input:

11
0 0
20 0
40 0
60 0
80 0
100 0
120 0
120 120
80 120
40 120
0 120

output:

1

result:

ok 1 number(s): "1"

Test #44:

score: 0
Accepted
time: 0ms
memory: 3520kb

input:

9
0 0
20 0
40 0
60 0
80 0
100 0
120 0
120 120
0 120

output:

1

result:

ok 1 number(s): "1"

Test #45:

score: 0
Accepted
time: 0ms
memory: 3552kb

input:

29
0 0
100 0
100 50
0 50
0 20
80 20
80 30
10 30
10 40
20 40
30 40
40 40
50 40
60 40
70 40
80 40
90 40
90 30
90 20
90 10
80 10
70 10
60 10
50 10
40 10
30 10
20 10
10 10
0 10

output:

2

result:

ok 1 number(s): "2"

Test #46:

score: 0
Accepted
time: 0ms
memory: 3608kb

input:

24
0 0
100 0
100 100
200 100
200 0
300 0
300 100
300 200
200 200
200 300
300 300
300 400
300 500
200 500
200 400
100 400
100 500
0 500
0 400
0 300
100 300
100 200
0 200
0 100

output:

2

result:

ok 1 number(s): "2"

Test #47:

score: 0
Accepted
time: 0ms
memory: 3620kb

input:

4
50 50
100 50
100 101
50 100

output:

1

result:

ok 1 number(s): "1"

Test #48:

score: 0
Accepted
time: 0ms
memory: 3808kb

input:

10
100 300
150 50
100 0
200 50
250 150
250 50
400 0
300 50
350 50
400 300

output:

2

result:

ok 1 number(s): "2"

Test #49:

score: 0
Accepted
time: 0ms
memory: 3588kb

input:

10
300 400
50 350
50 300
0 400
50 250
150 250
50 200
0 100
50 150
300 100

output:

2

result:

ok 1 number(s): "2"

Test #50:

score: -100
Wrong Answer
time: 0ms
memory: 3584kb

input:

5
0 0
100 100
60 40
200 200
40 60

output:

0

result:

wrong answer 1st numbers differ - expected: '2', found: '0'