제출 #403015

#제출 시각아이디문제언어결과실행 시간메모리
403015radaiosm7수열 (APIO14_sequence)C++98
100 / 100
1504 ms81404 KiB
#include <bits/stdc++.h> using namespace std; int n, k, i, par; long long pref[100005]; long long dp[2][100005]; int spl[210][100005]; void compute(int l, int r, int optl, int optr) { if (l>r) return; int mid = (l+r)/2; pair<long long, int> ans = make_pair(-1LL, -1); for (int j=optl; j <= optr && j < mid; ++j) { ans = max(ans, make_pair(dp[!(i&1)][j]+(pref[j]*(pref[mid]-pref[j])), j)); } dp[i&1][mid] = ans.first; spl[i][mid] = ans.second; compute(l, mid-1, optl, ans.second); compute(mid+1, r, ans.second, optr); } int main() { scanf("%d%d", &n, &k); pref[0] = 0LL; fill(dp[0], dp[0]+n+5, 0LL); fill(dp[1], dp[1]+n+5, 0LL); for (i=1; i <= n; ++i) { scanf("%lld", &pref[i]); pref[i] += pref[i-1]; } for (i=1; i <= k; ++i) { compute(1, n, 1, n); } printf("%lld\n", dp[k&1][n]); par = n; for (i=k; i > 0; --i) { par = spl[i][par]; printf("%d%c", par, (i==1)?('\n'):(' ')); } return 0; }

컴파일 시 표준 에러 (stderr) 메시지

sequence.cpp: In function 'int main()':
sequence.cpp:24:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |   scanf("%d%d", &n, &k);
      |   ~~~~~^~~~~~~~~~~~~~~~
sequence.cpp:30:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |     scanf("%lld", &pref[i]);
      |     ~~~~~^~~~~~~~~~~~~~~~~~
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...