Submission #754198

#	Time	Username	Problem	Language	Result	Execution time	Memory
754198		nicksms	Cave (IOI13_cave)	C++17	0 / 100	1291 ms	460 KiB

cave

#include "cave.h"
#include <bits/stdc++.h>

int ans[5000], w[5000], q[5000];

void exploreCave(int N) {
    for (int i = 0; i < N; i++) {
        memset(q,0,5000);
        for (int j = 0; j < i; j++) q[ans[j]]=w[j];
        w[i]=(tryCombination(q)==i);
        for (int b = 1; b < N; b<<=1) {
            memset(q,0,5000);
            for (int k = 0; k < N; k++) {
                q[k]=1 ^ w[i] ^ __builtin_popcount(k & b);
            }
            for (int j = 0; j < i; j++) q[ans[j]]=w[j];
            if (tryCombination(q)==i) ans[i] |= b;
        }
    }
    answer(ans,w);
}

Compilation message (stderr)

cave.cpp: In function 'void exploreCave(int)':
cave.cpp:8:24: warning: 'memset' used with length equal to number of elements without multiplication by element size [-Wmemset-elt-size]
    8 |         memset(q,0,5000);
      |                        ^
cave.cpp:12:28: warning: 'memset' used with length equal to number of elements without multiplication by element size [-Wmemset-elt-size]
   12 |             memset(q,0,5000);
      |                            ^

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