Submission #1018911

# Submission time Handle Problem Language Result Execution time Memory
1018911 2024-07-10T10:49:03 Z coolboy19521 Gap (APIO16_gap) C++17
30 / 100
38 ms 2000 KB
#include "bits/stdc++.h"
#include "gap.h"

using namespace std;

const int sz = 1e5 + 5;
long long a[sz];
long long findGap(int T, int N) {if (1 == T) {
		long long mn, mx;
		MinMax(0, 1e18, &mn, &mx);

		a[1] = mn;
		a[N] = mx;

		for (int i = 1; i <= (N+1)/2-1; i ++) {
			MinMax(mn+1, mx-1, &mn, &mx);
			a[i+1] = mn;
			a[N - i] = mx;
		}

		long long gp = 0;

		for (int i = 1; i <= N-1; i ++)
			gp = max(gp, a[i+1] - a[i]);

		return gp;
	} 
    if (T == 2) {
        long long mn, mx;
        MinMax(0, 1e18, &mn, &mx);
        vector<long long> b = {mn, mx};
        long long k = (mx - mn + N - 2) / (N - 1);

        while (b.size() < N) {
            long long nextMin, nextMax;
            // We should adjust the range for MinMax to ensure that we cover all possible values
            if (b.size() == 2) {
                // Special case for the first split, handling the entire range
                MinMax(mn + 1, mx - 1, &nextMin, &nextMax);
            } else {
                long long rangeStart = mn + k;
                long long rangeEnd = min(mx - 1, mn + k + k);
                if (rangeStart > rangeEnd) break;
                MinMax(rangeStart, rangeEnd, &nextMin, &nextMax);
            }

            // If no values found in the range, advance to the next block
            if (nextMin == -1) {
                mn = mx + 1;
                continue;
            }

            // Adding found min and max
            b.push_back(nextMin);
            if (nextMax != nextMin) {
                b.push_back(nextMax);
            }

            // Update the pointers
            mn = nextMax + 1;
        }

        // Sorting the elements to find the maximum gap
        sort(begin(b), end(b));

        long long maxGap = 0;
        for (int i = 0; i < b.size() - 1; i++) {
            maxGap = max(maxGap, b[i + 1] - b[i]);
        }
        return maxGap;
    }
    return 0; // This part should never be reached for T = 2
}
/*#include "bits/stdc++.h"
#include "gap.h"

using namespace std;

const int sz = 1e5 + 5;

long long a[sz];

long long findGap(int T, int N)
{
	if (1 == T) {
		long long mn, mx;
		MinMax(0, 1e18, &mn, &mx);

		a[1] = mn;
		a[N] = mx;

		for (int i = 1; i <= (N+1)/2-1; i ++) {
			MinMax(mn+1, mx-1, &mn, &mx);
			a[i+1] = mn;
			a[N - i] = mx;
		}

		long long gp = 0;

		for (int i = 1; i <= N-1; i ++)
			gp = max(gp, a[i+1] - a[i]);

		return gp;
	} else {
        long long mn, mx;
        MinMax(0, 1e18, &mn, &mx);

        vector<long long> b = {mn, mx};

        long long k = (mx - mn + N-2) / (N-1);

        while (N != (int) b.size()) {
            long long d = mn + k;
            int s = mn+1;
            int e = min(b[1]-1, mn + k+1);
            if (s > e) break;
            MinMax(s, e, &mn, &mx);
            if (-1 == mn) {
                mx = d;
                continue;
            } else if (mn == mx)
                b.push_back(mn);
            else {
                b.push_back(mn);
                b.push_back(mx);
                while (N != (int) b.size()) {
                    if (mn+1>mx-1) break;
                    MinMax(mn+1, mx-1, &mn, &mx);
                    if (-1 == mn) break;
                    if (mn == mx) {
                        b.push_back(mn);
                        break;
                    } else {
                        b.push_back(mn);
                        b.push_back(mx);
                    }
                }
                mx = d;
            }
            mn = mx + 1;
        }

        //for (int x : b)
//            cout << x << ' ';

  //      cout << '\n';

        sort(begin(b), end(b));

        long long gp = 0;

        for (int i = 0; i < N-1; i ++)
            gp = max(gp, b[i+1] - b[i]);

        return gp;
    }

	return 0;
}*/

Compilation message

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:34:25: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   34 |         while (b.size() < N) {
      |                ~~~~~~~~~^~~
gap.cpp:67:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |         for (int i = 0; i < b.size() - 1; i++) {
      |                         ~~^~~~~~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 7 ms 600 KB Output is correct
17 Correct 9 ms 600 KB Output is correct
18 Correct 7 ms 600 KB Output is correct
19 Correct 7 ms 800 KB Output is correct
20 Correct 6 ms 600 KB Output is correct
21 Correct 26 ms 1856 KB Output is correct
22 Correct 38 ms 2000 KB Output is correct
23 Correct 26 ms 1876 KB Output is correct
24 Correct 26 ms 1872 KB Output is correct
25 Correct 24 ms 1916 KB Output is correct
26 Correct 26 ms 1804 KB Output is correct
27 Correct 26 ms 1872 KB Output is correct
28 Correct 26 ms 1872 KB Output is correct
29 Correct 26 ms 1880 KB Output is correct
30 Correct 21 ms 1880 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 1 ms 344 KB Output isn't correct
3 Incorrect 0 ms 344 KB Output isn't correct
4 Incorrect 0 ms 344 KB Output isn't correct
5 Incorrect 0 ms 344 KB Output isn't correct
6 Incorrect 0 ms 344 KB Output isn't correct
7 Incorrect 0 ms 344 KB Output isn't correct
8 Incorrect 0 ms 344 KB Output isn't correct
9 Incorrect 0 ms 344 KB Output isn't correct
10 Incorrect 0 ms 344 KB Output isn't correct
11 Incorrect 0 ms 344 KB Output isn't correct
12 Incorrect 0 ms 344 KB Output isn't correct
13 Incorrect 0 ms 344 KB Output isn't correct
14 Incorrect 0 ms 344 KB Output isn't correct
15 Incorrect 1 ms 344 KB Output isn't correct
16 Incorrect 3 ms 600 KB Output isn't correct
17 Incorrect 3 ms 600 KB Output isn't correct
18 Incorrect 6 ms 600 KB Output isn't correct
19 Incorrect 3 ms 600 KB Output isn't correct
20 Incorrect 3 ms 600 KB Output isn't correct
21 Incorrect 12 ms 1160 KB Output isn't correct
22 Incorrect 13 ms 1112 KB Output isn't correct
23 Incorrect 12 ms 1112 KB Output isn't correct
24 Incorrect 12 ms 1112 KB Output isn't correct
25 Incorrect 10 ms 1112 KB Output isn't correct
26 Incorrect 12 ms 1224 KB Output isn't correct
27 Incorrect 13 ms 1112 KB Output isn't correct
28 Incorrect 14 ms 1112 KB Output isn't correct
29 Incorrect 12 ms 1112 KB Output isn't correct
30 Incorrect 8 ms 1212 KB Output isn't correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 1 ms 344 KB Output is correct