Submission #1033464

#	Time	Username	Problem	Language	Result	Execution time	Memory
1033464		Zicrus	Packing Biscuits (IOI20_biscuits)	C++17	33 / 100	915 ms	2097152 KiB

biscuits

#include <bits/stdc++.h>
#include "biscuits.h"
using namespace std;

typedef long long ll;

ll count_tastiness(ll x, vector<ll> a) {
    for (int i = 0; i < a.size(); i++) {
        ll transfer = max(0ll, (a[i]-x) / (2*x));
        if (transfer > 0) {
            if (i+1 >= a.size()) a.push_back(x*transfer);
            else a[i+1] += x*transfer;
            a[i] -= 2*x*transfer;
        }
    }
    ll n = a.size();
    ll m = 6*x;
    vector<vector<ll>> dp(n, vector<ll>(m));
    for (int i = 0; i < m; i++) {
        dp.back()[i] = i/x + 1;
    }

    for (int i = n-2; i >= 0; i--) {
        for (int j = 0; j < m; j++) {
            dp[i][j] = dp[i+1][a[i+1] + j/2];
            if (j >= x) {
                dp[i][j] += dp[i+1][a[i+1] + (j-x)/2];
            }
        }
    }

    return dp[0][a[0]];
}

Compilation message (stderr)

biscuits.cpp: In function 'll count_tastiness(ll, std::vector<long long int>)':
biscuits.cpp:8:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |     for (int i = 0; i < a.size(); i++) {
      |                     ~~^~~~~~~~~~
biscuits.cpp:11:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |             if (i+1 >= a.size()) a.push_back(x*transfer);
      |                 ~~~~^~~~~~~~~~~

• Subtask 1: 0 / 9
• Subtask 2: 12 / 12
• Subtask 3: 21 / 21
• Subtask 4: 0 / 35
• Subtask 5: 0 / 23