제출 #770788

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
770788	2023-07-02 00:41:46	vgoofficial	Knapsack (NOI18_knapsack)	C++14	100 / 100	58 ms	35028 KiB

knapsack

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#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main() {
    ios_base::sync_with_stdio(false); 
    cin.tie(0);
    int s,n;
    cin >> s >> n;
    vector<vector<pair<int, int>>> items(s+1);
    for(int i = 0; i < n; i++) {
        int value, weight, number;
        cin >> value >> weight >> number;
        items[weight].push_back(make_pair(value, number));
    }
    for(int i = 1; i <= s; i++) {
        sort(begin(items[i]), end(items[i]), [](const pair<int, int> a, const pair<int, int> b) -> bool{
            return a.first>b.first;
        });
    }
    ll arr[s+1][s+1];
    //arr[a][b]=x: first a weights, b total weight, x max value
    for(int i = 0; i <= s; i ++) {
        for(int j = 0; j <= s; j++) {
            arr[i][j]=0;
        }
    }
    for(int i = 1; i <= s; i++) {
        for(int j = 0; j <= s; j++) {
            arr[i][j]=max(arr[i-1][j], arr[i][j]);
 
 
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컴파일 시 표준 에러 (stderr) 메시지

knapsack.cpp: In function 'int main()':
knapsack.cpp:44:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |                     if(index==items[i].size()) {
      |                        ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 12 / 12
• Subtask 2: 17 / 17
• Subtask 3: 20 / 20
• Subtask 4: 24 / 24
• Subtask 5: 27 / 27