제출 #853038

#제출 시각아이디문제언어결과실행 시간메모리
853038lovrotGlobal Warming (CEOI18_glo)C++17
100 / 100
61 ms4020 KiB
#include <cstdio> #include <algorithm> using namespace std; const int N = 2e5 + 10; const int oo = 2e9 + 10; int n, x, A[N]; int LIS[N], L[N]; int main() { scanf("%d%d", &n, &x); for(int i = 0; i < n; ++i) LIS[i] = oo; for(int i = 0; i < n; ++i) { scanf("%d", A + i); int j = lower_bound(LIS, LIS + n, A[i]) - LIS; LIS[j] = A[i]; L[i] = j; } for(int i = 0; i < n; ++i) LIS[i] = -oo; int ans = 0; for(int i = n - 1; i >= 0; --i) { ans = max(ans, (int) (lower_bound(LIS, LIS + n, A[i] - x, [](int a, int b) { return a > b; }) - LIS) + L[i] + 1); int j = lower_bound(LIS, LIS + n, A[i], [](int a, int b) { return a > b; }) - LIS; LIS[j] = A[i]; } printf("%d\n", ans); return 0; }

컴파일 시 표준 에러 (stderr) 메시지

glo.cpp: In function 'int main()':
glo.cpp:14:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |  scanf("%d%d", &n, &x);
      |  ~~~~~^~~~~~~~~~~~~~~~
glo.cpp:17:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |   scanf("%d", A + i);
      |   ~~~~~^~~~~~~~~~~~~
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