이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include "coprobber.h"
#include <iostream>
#include <cassert>
#include <bitset>
#include <vector>
using namespace std;
bitset<MAX_N> edg[MAX_N];
bitset<MAX_N> redg[MAX_N];
bitset<MAX_N> used[2][MAX_N];
int depth[2][MAX_N][MAX_N];
int n;
int C;
int pR = -1;
int start(int N, bool A[MAX_N][MAX_N]) {
n = N;
int deg[MAX_N];
for (int i = 0; i < N; ++i) for (int j = 0; j < N; ++j) {
edg[i][j] = redg[j][i] = A[i][j];
}
for (int i = 0; i < N; ++i)
deg[i] = edg[i].count();
for (int i = 0; i < N; ++i) for (int j = 0; j < N; ++j) {
//bad_edg_cnt[0][i][j] = 1;
//bad_edg_cnt[1][i][j] = deg[j];
depth[1][i][j] = depth[0][i][j] = 1234567890;
}
vector<vector<int>> q;
for (int i = 0; i < N; ++i) {
//bad_edg_cnt[0][i][i] = bad_edg_cnt[1][i][i] = 0;
q.push_back({0, i, i});
q.push_back({1, i, i});
used[0][i][i] = used[1][i][i] = 1;
}
int timer = 0;
while (q.size()) {
int t = q.back()[0];
int u = q.back()[1];
int v = q.back()[2];
//cout << t << ' ' << u << ' ' << v << " | ";
depth[t][u][v] = timer++;
q.pop_back();
bitset<MAX_N> cedg;
if (t == 0) {
cedg = redg[v];
//used[u][v] = 1;
} else {
cedg = redg[u];
cedg[u] = 1;
}
if (t == 0) {
for (int nv = cedg._Find_first(); nv < n; nv = cedg._Find_next(nv)) {
if (!used[1][u][nv] && (used[0][u] & edg[nv]) == edg[nv]) {
//cout << "(1 " << u << ' ' << nv << ") ";
q.push_back({1, u, nv});
used[1][u][nv] = 1;
}
}
} else {
for (int nu = cedg._Find_first(); nu < n; nu = cedg._Find_next(nu)) {
if (!used[0][nu][v]) {
//cout << "(0 " << nu << ' ' << v << ") ";
q.push_back({0, nu, v});
used[0][nu][v] = 1;
}
}
}
//cout << endl;
}
for (int u = 0; u < n; ++u)
edg[u][u] = 1;
for (int u = 0; u < n; ++u) {
bool isok = true;
for (int v = 0; v < n; ++v) {
isok &= used[0][u][v];
//isok &= used[u][v] <= 0;
}
if (isok)
return C = u;
}
return -1;
}
int nextMove(int R) {
pR = R;
for (int nC = edg[C]._Find_first(); nC < n; nC = edg[C]._Find_next(nC)) {
if (depth[1][nC][R] < depth[0][C][R]) {
return C = nC;
}
}
assert(0);
}
컴파일 시 표준 에러 (stderr) 메시지
coprobber.cpp: In function 'int start(int, bool (*)[500])':
coprobber.cpp:18:9: warning: variable 'deg' set but not used [-Wunused-but-set-variable]
18 | int deg[MAX_N];
| ^~~
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