Submission #95703

# Submission time Handle Problem Language Result Execution time Memory
95703 2019-02-02T07:50:41 Z jeff Gap (APIO16_gap) C++14
100 / 100
237 ms 2288 KB
#include <bits/stdc++.h>
#include "gap.h"
using namespace std;
 
inline unsigned long long mde(unsigned long long a, unsigned long long b, unsigned long long c) {
    unsigned long long t = 0, y = 0, z = 0, i;
    stack<unsigned long long> st;
    while (b) st.push(b % 2), b /= 2;
    while (!st.empty()) {
        z <<= 1;
        y <<= 1;
        z += a * st.top();
        st.pop();
        y += z / (1LL << 62);
        z %= (1LL << 62);
    }
    t += y / c;
    y %= c;
    for (i = 0; i < 62; ++i) {
        y <<= 1;
        z <<= 1;
        t <<= 1;
        y += z / (1LL << 62);
        z %= (1LL << 62);
        t += y / c;
        y %= c;
    }
    return t;
}
 
vector<long long> v;
 
long long findGap(int T, int N) {
    long long l, r, y, z, ls = -1, rs = 0, a, b = 0, i;
    if (T == 1) {
        l = 0;
        r = 1000000000000000000;
        for (i = 0; i < (N + 1) / 2; ++i) {
            MinMax(l, r, &a, &b);
            if (a < 0 && b < 0) break;
            v.push_back(a);
            v.push_back(b);
            l = a + 1;
            r = b - 1;
            if (l > r) break;
        }
        sort(v.begin(), v.end());
        for (i = 1; i < v.size(); ++i) if (v[i - 1] > -1) rs = max(rs, v[i] - v[i - 1]);
        return rs;
    }
    MinMax(0, 1000000000000000000, &y, &z);
    for (i = 0; i < N - 1; ++i) {
        a = y + mde(z - y, i, N - 1);
        b = y + mde(z - y, i + 1, N - 1) - 1;
        if (a >= b) continue;
        MinMax(a, b, &l, &r);
        if (l < 0 && r < 0) continue;
        if (ls > -1) rs = max(rs, l - ls);
        ls = r;
    }
	return max(rs, z - ls);
}

Compilation message

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:48:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (i = 1; i < v.size(); ++i) if (v[i - 1] > -1) rs = max(rs, v[i] - v[i - 1]);
                     ~~^~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 380 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 14 ms 860 KB Output is correct
17 Correct 13 ms 892 KB Output is correct
18 Correct 14 ms 888 KB Output is correct
19 Correct 13 ms 892 KB Output is correct
20 Correct 12 ms 888 KB Output is correct
21 Correct 52 ms 2288 KB Output is correct
22 Correct 50 ms 2280 KB Output is correct
23 Correct 52 ms 2284 KB Output is correct
24 Correct 51 ms 2288 KB Output is correct
25 Correct 44 ms 2288 KB Output is correct
26 Correct 51 ms 2288 KB Output is correct
27 Correct 50 ms 2288 KB Output is correct
28 Correct 52 ms 2288 KB Output is correct
29 Correct 50 ms 2284 KB Output is correct
30 Correct 39 ms 2288 KB Output is correct
31 Correct 2 ms 376 KB Output is correct
32 Correct 2 ms 376 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 5 ms 504 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 58 ms 504 KB Output is correct
17 Correct 58 ms 676 KB Output is correct
18 Correct 57 ms 612 KB Output is correct
19 Correct 57 ms 612 KB Output is correct
20 Correct 49 ms 504 KB Output is correct
21 Correct 228 ms 1272 KB Output is correct
22 Correct 237 ms 1156 KB Output is correct
23 Correct 232 ms 1144 KB Output is correct
24 Correct 231 ms 1144 KB Output is correct
25 Correct 223 ms 1144 KB Output is correct
26 Correct 230 ms 1196 KB Output is correct
27 Correct 225 ms 1144 KB Output is correct
28 Correct 228 ms 1272 KB Output is correct
29 Correct 228 ms 1144 KB Output is correct
30 Correct 194 ms 1276 KB Output is correct
31 Correct 2 ms 376 KB Output is correct
32 Correct 2 ms 376 KB Output is correct