Submission #261321

#	Time	Username	Problem	Language	Result	Execution time	Memory
261321		Nightlight	Arcade (NOI20_arcade)	C++14	100 / 100	291 ms	16544 KiB

Arcade

#include <bits/stdc++.h>
#define pii pair<int, int>
using namespace std;

int N;
int P[500005], T[500005];
pii A[500005];
vector<int> LIS;

int main() {
  scanf("%d %d", &N, &N);
  for(int i = 1; i <= N; i++) scanf("%d", &T[i]);
  for(int i = 1; i <= N; i++) {
    scanf("%d", &P[i]);
    A[i] = make_pair(T[i] + P[i], -(N - (T[i] - P[i])));
  }
  sort(A + 1, A + N + 1);
  LIS.emplace_back(-A[1].second);
  for(int i = 2; i <= N; i++) {
    A[i].second = -A[i].second;
    int pos = lower_bound(LIS.begin(), LIS.end(), A[i].second) - LIS.begin();
    if(pos == LIS.size()) LIS.emplace_back(A[i].second);
    else LIS[pos] = A[i].second;
  }
  cout << LIS.size() << "\n";
  cin >> N;
}

Compilation message (stderr)

Arcade.cpp: In function 'int main()':
Arcade.cpp:22:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(pos == LIS.size()) LIS.emplace_back(A[i].second);
        ~~~~^~~~~~~~~~~~~
Arcade.cpp:11:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &N, &N);
   ~~~~~^~~~~~~~~~~~~~~~~
Arcade.cpp:12:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   for(int i = 1; i <= N; i++) scanf("%d", &T[i]);
                               ~~~~~^~~~~~~~~~~~~
Arcade.cpp:14:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &P[i]);
     ~~~~~^~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 11 / 11
• Subtask 3: 12 / 12
• Subtask 4: 21 / 21
• Subtask 5: 14 / 14
• Subtask 6: 20 / 20
• Subtask 7: 15 / 15