제출 #689411

#제출 시각아이디문제언어결과실행 시간메모리
689411Matteo_VerzBigger segments (IZhO19_segments)C++17
37 / 100
1581 ms3036 KiB
#include <bits/stdc++.h> #ifdef BLAT #include "debug/debug.hpp" #else #define debug(x...) #endif using namespace std; int main() { ios_base::sync_with_stdio(false); cin.tie(nullptr); int n; cin >> n; vector <int> v(1 + n), dp(1 + n); vector <long long> sp(1 + n), s(1 + n); dp[1] = 1; for (int i = 1; i <= n; i++) { cin >> v[i]; sp[i] = sp[i - 1] + v[i]; dp[i] = dp[i - 1]; s[i] = s[i - 1] + v[i]; for (int j = 1; j < i; j++) { if (sp[i] - sp[j] >= s[j]) { if (dp[j] + 1 == dp[i]) s[i] = min(s[i], sp[i] - sp[j]); else if (dp[j] + 1 > dp[i]) { s[i] = sp[i] - sp[j]; dp[i] = 1 + dp[j]; } } } } cout << dp[n] + 1 << '\n'; return 0; }
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