제출 #1322656

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1322656		trandinhnhat	Knapsack (NOI18_knapsack)	C++20	0 / 100	1096 ms	2360 KiB

knapsack

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define ull unsigned long long
#define str string
#define ch char
#define task ""
#define pb push_back
#define ii pair<ll,ll>
#define iii pair <ll, ii>
#define fi first
#define se second
using namespace std;

template<class X, class Y>
bool maximize(X &x, const Y &y) { return (x < y) ? (x = y, true) : false; }

template<class X, class Y>
bool minimize(X &x, const Y &y) { return (x > y) ? (x = y, true) : false; }

const ll mod = 1e9 + 7;
const ll N = 5005;
const ll inf = LLONG_MAX;
const ll SHIFT = 1e6;

ll a[N], w[N], v[N], dp[N][N];
ll n, s;

void sub1();
void sub2();
void sub3();

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    if (fopen(task ".inp", "r")) {
        freopen(task ".inp", "r", stdin);
        freopen(task ".out", "w", stdout);
    }
    cin >> s >> n;
    for (ll i = 1; i <= n; i++) {
        cin >> v[i] >> w[i] >> a[i];
    }
    for (ll i = 1; i <= n; i++) {
        for (ll j = s; j >= w[i]; j--) {
            for (ll k = 0; k <= a[i]; k++) {
                dp[i][j] = max(dp[i][j], dp[i - 1][j]);
                if (j - k * w[i] >= 0) {
                    dp[i][j] = max(dp[i][j], dp[i - 1][j - k * w[i]] + k * v[i]);
                }
                
            }
        }
    }
    cout << dp[n][s];
    return 0;
}
/*Set the pace, set the goal, maintain your streak by solving problem everyday*/
/*
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀   ⣠⡀⠀⠀⠀⠀⠀⣀⣴⠞⠀⠀⠀⠀⠀⠀ ⢀⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀   ⡼⣿⠀⠀⠀⣀⠴⠋⢡⠎⠀⠀⣀⡠⠴⠒⢉⠟⠁⠀⠀⠀ ⣀⣠⣤⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⢠⡄⠀⠀⠀⢠⠎⠀⡇⢀⡠⠚⠁⠀⢀⡯⠤⠚⠋⠁⠀⢀⡴⢃⣀⠤⠖⠛⠉⣠⠟⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⡜⢧⠀⠀⣰⠋⠀⢠⡧⠋⠀⠀⠀⠀⠈⠀⠀⠀⠀⠀⠰⠞⠋⠉⠀⠀⠀⢀⡜⠁⣀⣀⣀⣀⣀⣀⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⣰⠁⢸⡀⡰⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠋⠉⠉⠉⠉⠉⠉⢉⡭⠛⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⢀⡏⠀⠀⠿⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣠⠖⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⢸⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠶⣋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⣀⠀⠀⠀⡎⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⢦⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠙⣟⠒⠤⡧⠀⠀⠀⠀⠀⠀⠀⠐⢦⠀⠀⠀⠀⣄⠀⠀⠀⠀⢶⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠳⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠈⢦⠀⠀⠀⠀⠀⢀⣤⣴⣶⠿⢿⣷⣦⡀⠀⠘⣷⡄⠀⠀⠀⢳⣄⠀⠀⠀⠀⠰⡄⠀⠀⠀⠀⠀⠐⢶⠲⠤⣤⣌⡑⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠈⢳⡀⣠⣴⡾⠟⠉⠁⠀⠀⠈⢸⣿⣿⣦⡀⠈⢿⣶⣄⠀⠈⢻⣿⣶⣄⠀⠀⢹⣄⠀⠀⠀⠀⠀⠈⠳⡀⠀⠀⠈⠉⠃⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⡿⢟⢁⡀⠀⢀⣀⡤⠶⠒⠛⣿⣿⣿⣿⣦⣌⢿⣿⣿⣦⡀⢿⣿⣿⣿⣦⣄⣿⣷⣄⠀⠀⢷⠤⣀⠹⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⣼⡁⢰⣸⣷⠞⠋⠀⠀⠀⠀⠤⢿⣿⣿⣿⣿⣿⣷⣿⣿⣿⣿⣷⣿⣿⣿⠿⣿⣿⣿⣿⣷⣄⠸⡆⠈⠙⠾⣆⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⢿⣽⡿⡏⠛⠀⠀⠀⣀⣤⣶⣶⣾⣿⡿⠿⠛⠛⠉⣏⠉⠁⠀⢰⠟⣯⣾⡟⠻⣿⡍⠉⠛⣟⠳⣽⡀⠀⠀⠈⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⢸⠟⠃⠀⢀⣤⣶⣿⣿⣿⡿⣋⡭⣄⠀⠀⠀⠀⠀⠘⣆⠀⠀⡏⠀⣿⣿⣧⡀⢿⡷⠀⠀⠘⣄⠈⠛⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠈⡇⣀⣶⣾⣿⠿⣫⢿⢟⣵⣾⣟⣻⠀⠀⠀⠀⠀⠀⠹⣶⡀⡇⠀⠈⣿⣇⠇⣾⡷⠀⠀⠀⠘⣆⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠻⣿⣿⡋⠀⠸⠁⠎⣿⣿⣟⡿⠇⠀⠀⠀⠀⠀⠀⠀⠯⢳⡇⠀⠀⠛⠋⣸⣿⠆⠀⠀⠀⢤⣜⣦⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠈⢻⣳⡆⢠⣶⡆⠛⠛⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠓⠀⠀⣀⣀⣽⡋⠀⠀⠀⠀⠘⣏⠛⢧⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠘⢿⡇⢰⣿⡗⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢿⣿⡟⡏⢷⠀⠀⠀⠀⣤⡘⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⣸⠁⠰⣿⠿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⣿⣇⠃⠈⡆⠀⠀⠀⢹⡙⢿⡀⠀⠀⣀⣀⣠⣤⣤⡄⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⢰⠃⠀⠀⣀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⣿⡏⠀⠀⢹⣄⣀⣀⣼⣷⣶⣾⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠈⠳⢴⣯⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣿⣿⣀⣤⣴⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⢻⡀⢀⣀⡤⠤⠄⠀⠀⠀⠀⠀⠀⠀⠀⣀⣀⣤⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢻⣏⡠⢤⣴⠄⠀⠀⠀⢀⣠⣤⣶⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢹⣄⠀⠛⢀⣠⣶⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣸⣴⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⣀⣤⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⣠⣴⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠘⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣟⣿⣽⣿⣾⣿⣿⣿⣿⣿⣿⣿⣿⣶⣄⠀⠀⠀
⠀⠀⠀⠀⠀⠹⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⡄⠀
⠀⠀⠀⠀⠀⠀⢹⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡀
⠀⠀⠀⠀⠀⠀⠀⢻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷
*/

컴파일 시 표준 에러 (stderr) 메시지

knapsack.cpp: In function 'int main()':
knapsack.cpp:37:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |         freopen(task ".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
knapsack.cpp:38:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |         freopen(task ".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

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