제출 #828210

#제출 시각아이디문제언어결과실행 시간메모리
828210tomruk비스킷 담기 (IOI20_biscuits)C++17
0 / 100
1 ms340 KiB
#include "biscuits.h" #include <bits/stdc++.h> using namespace std; long long count_tastiness(long long x, vector<long long> a){ long long now = 0; // for(int i = 0;i<a.size();i++){ // a[i] += now; // now = 0; // if(a[i] > x){ // now = (a[i] - x)/2; // a[i] -= now * 2; // } // if(now && i == a.size() - 1) // a.push_back(0); // } int k = a.size(); vector<long long> dp(k+1,0); dp[0] = 1; for(int i = 0;i<k;i++){ dp[i+1] = dp[i]; function<void(int,long long)> go = [&](int p,long long y) -> void{ long long coef = 1; long long last = 0; int tmp = p; while(p > 0 && y/coef < x){ coef *= 2; y *= 2; p--; if((y + a[p])/coef >= x){ last = x*coef - y; y = x * coef; } else{ last = a[p]; y += a[p]; } } if(y/coef < x) return; dp[i + 1] += dp[p]; if(tmp != p) go(p,a[p] - last); }; go(i,a[i]); } return dp[k]; }

컴파일 시 표준 에러 (stderr) 메시지

biscuits.cpp: In function 'long long int count_tastiness(long long int, std::vector<long long int>)':
biscuits.cpp:5:12: warning: unused variable 'now' [-Wunused-variable]
    5 |  long long now = 0;
      |            ^~~
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