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답안 #400177

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
400177 2021-05-07T13:43:22 Z mathking1021 곡선 자르기 (KOI17_cut) C++17
100 / 100
 328 ms 50340 KB 
#include <iostream>
#include <cstdio>
#include <vector>
#include <stack>
#include <algorithm>
#define PLL pair<ll, ll>
#define F first
#define S second

using namespace std;
typedef long long ll;

const ll INF = 4e18;
ll n;
ll a[1000005];
ll b[1000005];

vector<ll> ve1, ve2;
vector<PLL> ve;
stack<ll> st1, st2, st3;

ll ans1, ans2;

int main()
{
    scanf("%lld", &n);
    for(ll i = 0; i < n; i++)
    {
        scanf("%lld%lld", &a[i], &b[i]);
    }
    for(ll i = 1; i <= n; i++)
    {
        if(b[i - 1] < 0 && b[i % n] > 0) ve1.push_back(a[i % n]);
        else if(b[i - 1] > 0 && b[i % n] < 0)
        {
            if(ve1.empty()) ve1.push_back(INF);
            ve2.push_back(a[i % n]);
        }
    }
    if(ve1[0] == INF) ve1[0] = ve1.back(), ve1.pop_back();
    for(ll i = 0; i < ve1.size(); i++)
    {
        ve.push_back(make_pair(ve1[i], ve2[i]));
    }
    for(ll i = 0; i < ve.size(); i++)
    {
        if(ve[i].F > ve[i].S) swap(ve[i].F, ve[i].S);
    }
    sort(ve.begin(), ve.end());
    for(ll i = 0; i < ve.size(); i++)
    {
        while(!st1.empty() && st2.top() < ve[i].F)
        {
            if(st3.top() == 0) ans1++;
            st1.pop(), st2.pop(), st3.pop();
        }
        if(!st3.empty())
        {
            st3.pop(), st3.push(1);
        }
        st1.push(ve[i].F), st2.push(ve[i].S), st3.push(0);
    }
    while(!st1.empty())
    {
        if(st3.top() == 0) ans1++;
        st1.pop(), st2.pop(), st3.pop();
    }
    for(ll i = 0; i < ve.size(); i++)
    {
        while(!st1.empty() && st2.top() < ve[i].F)
        {
            if(st3.top() == 0) ans2++;
            st1.pop(), st2.pop(), st3.pop();
        }
        if(!st3.empty())
        {
            st1.push(ve[i].F), st2.push(ve[i].S), st3.push(1);
        }
        else
        {
            st1.push(ve[i].F), st2.push(ve[i].S), st3.push(0);
        }
    }
    while(!st1.empty())
    {
        if(st3.top() == 0) ans2++;
        st1.pop(), st2.pop(), st3.pop();
    }
    printf("%lld %lld\n", ans2, ans1);
    return 0;
}

Compilation message

cut.cpp: In function 'int main()':
cut.cpp:41:21: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |     for(ll i = 0; i < ve1.size(); i++)
      |                   ~~^~~~~~~~~~~~
cut.cpp:45:21: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |     for(ll i = 0; i < ve.size(); i++)
      |                   ~~^~~~~~~~~~~
cut.cpp:50:21: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |     for(ll i = 0; i < ve.size(); i++)
      |                   ~~^~~~~~~~~~~
cut.cpp:68:21: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |     for(ll i = 0; i < ve.size(); i++)
      |                   ~~^~~~~~~~~~~
cut.cpp:26:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   26 |     scanf("%lld", &n);
      |     ~~~~~^~~~~~~~~~~~
cut.cpp:29:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   29 |         scanf("%lld%lld", &a[i], &b[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 308 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 308 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 2 ms 332 KB Output is correct
19 Correct 4 ms 716 KB Output is correct
20 Correct 4 ms 844 KB Output is correct
21 Correct 4 ms 844 KB Output is correct
22 Correct 4 ms 840 KB Output is correct
23 Correct 4 ms 844 KB Output is correct
24 Correct 4 ms 844 KB Output is correct
25 Correct 4 ms 716 KB Output is correct
26 Correct 4 ms 716 KB Output is correct
27 Correct 4 ms 844 KB Output is correct
28 Correct 4 ms 840 KB Output is correct
29 Correct 4 ms 844 KB Output is correct
30 Correct 4 ms 844 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 308 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 2 ms 332 KB Output is correct
19 Correct 4 ms 716 KB Output is correct
20 Correct 4 ms 844 KB Output is correct
21 Correct 4 ms 844 KB Output is correct
22 Correct 4 ms 840 KB Output is correct
23 Correct 4 ms 844 KB Output is correct
24 Correct 4 ms 844 KB Output is correct
25 Correct 4 ms 716 KB Output is correct
26 Correct 4 ms 716 KB Output is correct
27 Correct 4 ms 844 KB Output is correct
28 Correct 4 ms 840 KB Output is correct
29 Correct 4 ms 844 KB Output is correct
30 Correct 4 ms 844 KB Output is correct
31 Correct 64 ms 9332 KB Output is correct
32 Correct 259 ms 40368 KB Output is correct
33 Correct 57 ms 9016 KB Output is correct
34 Correct 229 ms 34860 KB Output is correct
35 Correct 308 ms 44020 KB Output is correct
36 Correct 304 ms 44072 KB Output is correct
37 Correct 328 ms 50340 KB Output is correct
38 Correct 294 ms 43888 KB Output is correct
39 Correct 301 ms 44532 KB Output is correct
40 Correct 283 ms 40240 KB Output is correct
41 Correct 281 ms 40368 KB Output is correct
42 Correct 285 ms 42728 KB Output is correct
43 Correct 287 ms 42412 KB Output is correct
44 Correct 298 ms 42408 KB Output is correct
45 Correct 288 ms 42720 KB Output is correct