제출 #376334

#제출 시각아이디문제언어결과실행 시간메모리
376334HalogenBigger segments (IZhO19_segments)C++14
0 / 100
156 ms262148 KiB
#include <bits/stdc++.h> using namespace std; #define int long long int N, presum[500005]; int memo[505][505][505]; int dp(int x, int y, int z) { if (memo[x][y][z] != -1) return memo[x][y][z]; int ans; int preseg = presum[y] - presum[z], curseg = presum[x] - presum[y]; if (x > N) { if (preseg > curseg) ans = -N - 5; else ans = 0; } else if (preseg > curseg) ans = dp(x + 1, y, z); else ans = max( dp(x + 1, y, z), 1 + dp(x + 1, x, y) ); // printf("%lld %lld %lld %lld\n", ans, x, y, z); return ans; } main() { scanf("%lld", &N); memset(memo, -1, sizeof(memo)); memset(presum, 0, sizeof(presum)); for (int i = 1; i <= N; i++) scanf("%lld", &presum[i]); for (int i = 2; i <= N + 1; i++) presum[i] += presum[i - 1]; printf("%lld\n", max(0ll, dp(1, 0, 0) + 1)); }

컴파일 시 표준 에러 (stderr) 메시지

segments.cpp:32:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   32 | main() {
      |      ^
segments.cpp: In function 'int main()':
segments.cpp:33:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   33 |     scanf("%lld", &N);
      |     ~~~~~^~~~~~~~~~~~
segments.cpp:36:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   36 |     for (int i = 1; i <= N; i++) scanf("%lld", &presum[i]);
      |                                  ~~~~~^~~~~~~~~~~~~~~~~~~~
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