oj.uz

답안 #1050063

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1050063 2024-08-09T07:09:19 Z vjudge1 Art Exhibition (JOI18_art) C++17
0 / 100
 0 ms 348 KB 
#include <bits/stdc++.h>

// #ifndef ONLINE_JUDGE
// #include "debug.cpp"
// #else
// #define debug(...)
// #define debugArr(...)
// #endif

#pragma region 
#define int long long

#define vec vector
#define vlong vec<long>
#define vint vec<int>
#define vchar vec<char>
#define vbool vec<bool>
#define vvint vec<vint>
#define vstr vec<string>
#define vstring vstr
#define vpint vec<pair<int, int> >

#define CININT(n) INTCIN(n);
#define INTCIN(n) int n; cin >> n;
#define INTCINVINTCIN(a, n) INTCIN(n); vint a(n); CINV(a, n);
#define TWOVECS(a, b, n) INTCIN(n); vint a(n), b(n); CINV(a, n) CINV (b, n);
#define TWOCOLS(a, b, n) INTCIN(n); vint a(n), b(n); CINVV(a, b, n);

#define ICVK(n, k, a) 			CININT(n); CININT(k); vint a(n); CINV(a, n);
#define ICVK1(n, k, a) 			ICVK(n, k, a)
#define ICVK2(n, k, h, a) 		CININT(n); CININT(k); CININT(h); vint a(n); CINV(a, n);
#define ICVK3(n, k, h, m, a)	CININT(n); CININT(k); CININT(h); CININT(m); vint a(n); CINV(a, n);

#define CIN(n) 			cin >> n;
#define COUT(n) 		cout << n;

#define CINV(a, n) 		for (int i = 0; i < n; i++) {cin >> a[i];}
#define CINVV(a, b, n) 	for (int i = 0; i < n; i++) {cin >> a[i] >> b[i];}

#define COUTV(a, n) 	for (int i = 0; i < n; i++) {cout << a[i] << " ";}
#define COUTVV(a, b, n) 	for (int i = 0; i < n; i++) {cout << a[i] << " " << b[i] << "\n";}

#define NOSPACE(a, n) 	for (int i = 0;i < n;i++) {cout << a[i];}
#define ENDL cout << "\n";

#define SORT(a) sort(a.begin(), a.end());
#define REVERSE(a) reverse(a.begin(), a.end());
#define HAS(theset, num) ((theset.find((num)) != (theset.end())))

#define FOR(i, n) for (int i = 0; i < n; i++)
#define FOR1(i, n) for (int i = 1; i < n; i++)
#define YES if (true) {cout << "YES"; return;}
#define NO if (true) {cout << "NO"; return;}
#define Yes if (true) {cout << "Yes"; return;}
#define No if (true) {cout << "No"; return;}
#define IMPOS if (true) {cout << "Impossible"; return;}
#define IMPOSS IMPOS

#define SP " "
#define NEWLINE "\n"

#define Q int q;cin>>q;while(q--)
#pragma endregion

using namespace std;


void pre() {}

// you can do this!
const bool DO_ENDL = true;
const bool MULTI_T = false; // :skull: dont forgorr me!!
void solve() {
    int n;
    cin >> n;
    vec<pair<int, int> > a(n);

    for (int i = 0; i < n; i++) {
        int x, y;
        cin >> x >> y;
        a[i] = {x, y};
    }

    SORT(a);

    vint val_pfx(n+1);
    for (int i = 1; i <= n; i++) {
        val_pfx[i] = a[i-1].second + val_pfx[i-1];
    }


    // naive
    int ans = 0;
    // for (int i = 0; i < n; i++) {
    //     for (int j = i; j < n; j++) {
    //         ans = max(ans, 
    //             -(a[j].first - a[i].first) + val_pfx[j+1] - val_pfx[i]
    //         );
    //     }
    // }


    int bestj = 0;
    for (int i = 0; i < n; i++) {
        int oldi = i;

        for (int j = max(bestj, i); j < n; j++) {
            int newval = -(a[j].first - a[i].first) + val_pfx[j+1] - val_pfx[i];
            int oldval = -(a[bestj].first - a[i].first) + val_pfx[bestj+1] - val_pfx[i];
            ans = max(ans, 
                newval
            );
            if (newval > oldval) bestj = j;
        }
        int besti = i;
        for (; i <= bestj; i++) {
            int newval = -(a[bestj].first - a[i].first) + val_pfx[bestj+1] - val_pfx[i];
            int oldval = -(a[bestj].first - a[besti].first) + val_pfx[bestj+1] - val_pfx[besti];
            ans = max(ans, 
                newval
            );
            if (newval > oldval) {
                besti = i;
            }
        }
        i = max(besti-100, oldi+1);
        // i = besti;
    }


    cout << ans;
}


signed main() {
	pre();
	if (not MULTI_T)
		{solve();
		return 0;}
	
	CININT(t);
	while (t--) {
		solve();
		if (DO_ENDL)
			ENDL;
	}
}

Compilation message

art.cpp:10: warning: ignoring '#pragma region ' [-Wunknown-pragmas]
   10 | #pragma region
      | 
art.cpp:63: warning: ignoring '#pragma endregion ' [-Wunknown-pragmas]
   63 | #pragma endregion
      |

Subtask #1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -