Submission #1203899

#	Time	Username	Problem	Language	Result	Execution time	Memory
1203899		andrejikus	Cave (IOI13_cave)	C++20	0 / 100	66 ms	328 KiB

cave

#include <bits/stdc++.h>
#include "cave.h"
using namespace std;
typedef long long ll;
void DBG() { cerr << "]" << endl; }
template<class H, class... T> void DBG(H h, T... t) { cerr << to_string(h); if(sizeof...(t)) cerr << ", "; DBG(t...); }
#define dbg(...) cerr << "[" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__)

const int N = 5003;
int s[N], d[N];

int tryCombination(int S[]);

void answer(int S[], int D[]);

void exploreCave(int n) {
    for (int i = 0; i < n; i++) d[i] = -1;

    auto ok = [&](int l, int r) {
        for (int k = l; k <= r; k++) {
            if (d[k] != -1) continue;
            s[k] = 0;
        }
        int x = tryCombination(s);
        for (int k = l; k <= r; k++) {
            if (d[k] != -1) continue;
            s[k] = 1;
        }
        int y = tryCombination(s);
        return (x != y);
    };

    for (int i = 0; i < n; i++) {
        int low = 0, high = n-1;
        while (low < high) {
            int mid = (low + high) / 2;
            if (ok(low, mid))
                high = mid;
            else
                low = mid+1;
        }
        d[i] = low;
        s[i] = 0;
        int x = tryCombination(s);
        if (x == low)
            s[i] = 1;
    }

    answer(s, d);
}

• Subtask 1: 0 / 12
• Subtask 2: 0 / 13
• Subtask 3: 0 / 21
• Subtask 4: 0 / 30
• Subtask 5: 0 / 24