oj.uz

답안 #83430

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
83430 2018-11-07T14:43:41 Z tjdgus4384 곡선 자르기 (KOI17_cut) C++14
0 / 100
 2 ms 632 KB 
#include<cstdio>
#include<vector>
#include<algorithm>
int x[100001], y[100001];
using namespace std;
vector<pair<int, int> > v;

int main()
{
    int n;
    scanf("%d", &n);
    for(int i = 0;i < n;i++)
    {
        scanf("%d %d", &x[i], &y[i]);
    }
    int state = 0, last, st;
    for(int i = 1;i < n;i++)
    {
        if(y[i - 1] < 0 && y[i] > 0) {last = x[i];state = 1;}
        else if(state && y[i - 1] > 0 && y[i] < 0)
        {
            state = 0;
            v.push_back({min(last, x[i]), max(last, x[i])});
        }
        else if(y[i - 1] > 0 && y[i] < 0) st = x[i];
    }
    if(state)
    {
        v.push_back({min(last, st), max(last, st)});
    }
    sort(v.begin(), v.end());
    int ans1 = 0, ans2 = 0;
    int maxx = -2e9;
    for(int i = 0;i < v.size();i++)
    {
        if(maxx < v[i].first) ans1++;
        maxx = max(maxx, v[i].second);
        if(i == v.size() - 1 || v[i + 1].first > v[i].second) ans2++;
    }
    printf("%d %d", ans1, ans2);
    return 0;
}

Compilation message

cut.cpp: In function 'int main()':
cut.cpp:34:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0;i < v.size();i++)
                   ~~^~~~~~~~~~
cut.cpp:38:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if(i == v.size() - 1 || v[i + 1].first > v[i].second) ans2++;
            ~~^~~~~~~~~~~~~~~
cut.cpp:11:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
cut.cpp:14:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &x[i], &y[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 380 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 424 KB Output is correct
4 Correct 2 ms 500 KB Output is correct
5 Correct 2 ms 500 KB Output is correct
6 Correct 2 ms 544 KB Output is correct
7 Correct 2 ms 544 KB Output is correct
8 Correct 2 ms 544 KB Output is correct
9 Correct 2 ms 592 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 2 ms 592 KB Output is correct
12 Correct 2 ms 632 KB Output is correct
13 Correct 2 ms 632 KB Output is correct
14 Correct 2 ms 632 KB Output is correct
15 Incorrect 2 ms 632 KB Output isn't correct

Subtask #2
0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 380 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 424 KB Output is correct
4 Correct 2 ms 500 KB Output is correct
5 Correct 2 ms 500 KB Output is correct
6 Correct 2 ms 544 KB Output is correct
7 Correct 2 ms 544 KB Output is correct
8 Correct 2 ms 544 KB Output is correct
9 Correct 2 ms 592 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 2 ms 592 KB Output is correct
12 Correct 2 ms 632 KB Output is correct
13 Correct 2 ms 632 KB Output is correct
14 Correct 2 ms 632 KB Output is correct
15 Incorrect 2 ms 632 KB Output isn't correct

Subtask #3
0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 380 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 424 KB Output is correct
4 Correct 2 ms 500 KB Output is correct
5 Correct 2 ms 500 KB Output is correct
6 Correct 2 ms 544 KB Output is correct
7 Correct 2 ms 544 KB Output is correct
8 Correct 2 ms 544 KB Output is correct
9 Correct 2 ms 592 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 2 ms 592 KB Output is correct
12 Correct 2 ms 632 KB Output is correct
13 Correct 2 ms 632 KB Output is correct
14 Correct 2 ms 632 KB Output is correct
15 Incorrect 2 ms 632 KB Output isn't correct