제출 #805379

#제출 시각아이디문제언어결과실행 시간메모리
805379WLZ비스킷 담기 (IOI20_biscuits)C++17
0 / 100
1072 ms28724 KiB
#include "biscuits.h" //#include "../../templates/debug.h" #include <bits/stdc++.h> using namespace std; long long count_tastiness(long long x, std::vector<long long> a) { for (int i = 0; i < (int) a.size(); i++) { if (a[i] > x) { if (i == (int) a.size() - 1) a.push_back(0); a[i + 1] += (a[i] - x) / 2; a[i] -= (a[i] - x) / 2; } } int k = (int) a.size(); long long ans = 0; vector< map<long long, long long> > dp(k + 1, map<long long, long long>()); dp[0][0] = 1; for (int i = 0; i <= k; i++) { for (auto &[j, d] : dp[i]) { if (j >= 0) ans += d; long long extra = j; for (int t = i + 1; t <= k; t++) { extra = (extra / 2) - (extra < 0); extra += a[t - 1]; dp[t][extra - x] += dp[i][j]; } } } //debug(dp); return ans; }
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