Submission #1307062

#	Time	Username	Problem	Language	Result	Execution time	Memory
1307062		nanaseyuzuki	만두 팔기 (JOI14_manju)	C++20	100 / 100	18 ms	4516 KiB

t2

#include <bits/stdc++.h>
// Kazusa_Megumi
#define int long long
#define fi first
#define se second
#define pii pair<int, int>
#define all(a) a.begin(), a.end()
using namespace std;

const int mn = 5e5 + 5, mod = 1e9 + 7, inf = 2e18;

int m, n, p[mn], dp[mn];

void solve() {
    cin >> m >> n;
    for(int i = 1; i <= m; i++) cin >> p[i];
   	sort(p + 1, p + m + 1, greater <int> ());

   	fill(dp, dp + mn, inf);
   	dp[0] = 0;
   	for(int i = 1; i <= n; i++){
   		int e, c; cin >> c >> e;
   		for(int i = m; i >= 0; i--) dp[min(m, i + c)] = min(dp[min(m, i + c)], dp[i] + e);
   		for(int i = m; i >= 0; i--) dp[i - 1] = min(dp[i], dp[i - 1]);
   	}
   	int ans = 0, cur = 0;
   	for(int i = 1; i <= m; i++){
   		cur += p[i], ans = max(ans, cur - dp[i]);
   	}
   	cout << ans << '\n';
}

main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
    if (fopen("Kazuki.INP", "r")) {
        freopen("Kazuki.INP", "r", stdin);
        freopen("Kazuki.OUT", "w", stdout);
    }
    int t = 1;
    // cin >> t;
    while (t--) solve();
    return 0;
}

Compilation message (stderr)

t2.cpp:33:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   33 | main() {
      | ^~~~
t2.cpp: In function 'int main()':
t2.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("Kazuki.INP", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
t2.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("Kazuki.OUT", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 25 / 25
• Subtask 2: 35 / 35
• Subtask 3: 40 / 40