Submission #848149

#	Time	Username	Problem	Language	Result	Execution time	Memory
848149		KN200711	Global Warming (CEOI18_glo)	C++14	100 / 100	40 ms	4064 KiB

glo

# include <bits/stdc++.h>
using namespace std;

int main() {
	int N, d;
	scanf("%d %d", &N, &d);
	vector<int> arr(N);
	for(int i=0;i<N;i++) scanf("%d", &arr[i]);
	
	vector<int> wo, wi;
	wo.clear();
	wi.clear();
	
	for(int i=0;i<N;i++) {
		if(wo.size() == 0 || wo.back() < arr[i]) wo.push_back(arr[i]);
		else {
			int c = lower_bound(wo.begin(), wo.end(), arr[i]) - wo.begin();
			wo[c] = arr[i];
		}
		if(wi.size() == 0 || wi.back() < arr[i] - d) {
			wi.push_back(arr[i] - d);
			int p = wi.size();
			wo[p - 1] = min(wo[p-1], wi[p-1]);
		}
		else {
			int c = lower_bound(wi.begin(), wi.end(), arr[i] - d) - wi.begin();
			wi[c] = arr[i] - d;
			wo[c] = min(wo[c], wi[c]);
		}
	}
	printf("%d\n", wo.size());
	return 0;
}

Compilation message (stderr)

glo.cpp: In function 'int main()':
glo.cpp:31:11: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wformat=]
   31 |  printf("%d\n", wo.size());
      |          ~^     ~~~~~~~~~
      |           |            |
      |           int          std::vector<int>::size_type {aka long unsigned int}
      |          %ld
glo.cpp:6:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    6 |  scanf("%d %d", &N, &d);
      |  ~~~~~^~~~~~~~~~~~~~~~~
glo.cpp:8:28: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |  for(int i=0;i<N;i++) scanf("%d", &arr[i]);
      |                       ~~~~~^~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 13 / 13
• Subtask 4: 10 / 10
• Subtask 5: 20 / 20
• Subtask 6: 17 / 17
• Subtask 7: 25 / 25