이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
#include "cave.h"
using namespace std;
typedef long long ll;
const int N = 5002;
int n;
/*int puta = 0;
int *prvi,*drugi;
int *kojisvic;
int tryCombination(int *S){
puta++;
for(int i = 0; i < n; i++){
if(S[kojisvic[i]] != prvi[kojisvic[i]]) return i;
}
return -1;
}
void answer(int *S,int *D){
for(int i = 0; i < n; i++){
if(S[i] != prvi[i]){
cout << "WA1" << endl;
exit(0);
}
}
for(int i = 0; i < n; i++){
if(D[i] != drugi[i]){
cout << "WA2" << endl;
for(int i = 0; i < n; i++){
cout << D[i] << " ";
}
cout << endl;
exit(0);
}
}
cout << "OK" << endl;
}*/
void znamred(){
int *niz = (int*)malloc(sizeof(int)*n);
int *odg1 = (int*)malloc(sizeof(int)*n);
for(int i = 0; i < n; i++){ niz[i] = 0; odg1[i] = i; }
while(1){
int x = tryCombination(niz);
if(x == -1) break;
niz[x] ^= 1;
}
answer(niz,odg1);
}
void znamkod(){
int *niz = (int*)malloc(sizeof(int)*n);
int *odg1 = (int*)malloc(sizeof(int)*n);
for(int i = 0; i < n; i++) niz[i] = 0;
for(int i = 0; i < n; i++){
niz[i] = 1;
odg1[i] = tryCombination(niz);
niz[i] = 0;
}
answer(niz,odg1);
}
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
void zasve(){
int *niz = (int*)malloc(sizeof(int)*n);
int *odg1 = (int*)malloc(sizeof(int)*n);
for(int i = 0; i < n; i++) niz[i] = 0;
for(int i = 0; i < n; i++) odg1[i] = -1;
int kreni = 0;
while(1){
int x = tryCombination(niz);
if(x == -1){ /// sad su sva ugasena, nasao si S(i) za sve
break;
}
for(int i = kreni; i < x; i++){
if(odg1[i] != -1) continue;
niz[i] ^= 1;
odg1[i] = tryCombination(niz);
niz[i] ^= 1;
}
kreni = x+1;
vector <int> moze;
for(int j = 0; j < n; j++){ /// sigurno samo oni > x sada
if(odg1[j] == -1) moze.push_back(j);
}
int sz = sqrt(moze.size()); /// velicina blokova
int brb = (moze.size()+sz-1)/sz;
int kojiblok = -1;
for(int j = 0; j < brb; j++){
for(int h = j*sz; h < (j+1)*sz && h < moze.size(); h++){ /// ovaj blok izmenis
niz[moze[h]] ^= 1;
}
int y = tryCombination(niz);
if(y > x || y == -1){
kojiblok = j;
for(int h = j*sz; h < (j+1)*sz && h < moze.size(); h++){
niz[moze[h]] ^= 1;
}
break;
}
for(int h = j*sz; h < (j+1)*sz && h < moze.size(); h++){
niz[moze[h]] ^= 1;
}
}
for(int h = kojiblok*sz; h < (kojiblok+1)*sz && h < moze.size(); h++){
niz[moze[h]] ^= 1;
int y = tryCombination(niz);
if(y > x || y == -1){
odg1[moze[h]] = x;
break;
}
niz[moze[h]] ^= 1;
}
/*for(int j = 0; j < n; j++){ /// ko upravlja vratima x?
if(odg1[j] != -1) continue;
niz[j] ^= 1;
int y = tryCombination(niz);
if(y > x || y == -1){ /// znaci da svic j upravlja vratima x
odg1[j] = x;
break;
}
if(y < x){
odg1[j] = y;
}
niz[j] ^= 1;
}*/
}
/// sad znas sve S(i), tj. za niz su ti sva vrata ugasena
for(int i = 0; i < n; i++){
if(odg1[i] != -1) continue;
niz[i] ^= 1;
odg1[i] = tryCombination(niz);
niz[i] ^= 1;
}
answer(niz,odg1);
}
void exploreCave(int br){
n = br;
zasve();
return;
int *pr = (int*)malloc(sizeof(int)*n);
for(int i = 0; i < n; i++) pr[i] = 0;
if(tryCombination(pr) == -1){
znamkod();
return;
}
znamred();
}
/*int main(){
ios_base::sync_with_stdio(false);
cin.tie(0);
int gh;
//cin >> gh;
gh = 2000;
prvi = (int*)malloc(sizeof(int)*gh);
drugi = (int*)malloc(sizeof(int)*gh);
kojisvic = (int*)malloc(sizeof(int)*gh);
for(int i = 0; i < gh; i++) cin >> prvi[i]; prvi[i] = 1;
for(int i = 0; i < gh; i++){ cin >> drugi[i]; drugi[i] = gh-i-1; kojisvic[drugi[i]] = i; }
exploreCave(gh);
cout << puta << endl;
}*/
컴파일 시 표준 에러 (stderr) 메시지
cave.cpp: In function 'void zasve()':
cave.cpp:107:49: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
107 | for(int h = j*sz; h < (j+1)*sz && h < moze.size(); h++){ /// ovaj blok izmenis
| ~~^~~~~~~~~~~~~
cave.cpp:113:53: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
113 | for(int h = j*sz; h < (j+1)*sz && h < moze.size(); h++){
| ~~^~~~~~~~~~~~~
cave.cpp:118:49: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
118 | for(int h = j*sz; h < (j+1)*sz && h < moze.size(); h++){
| ~~^~~~~~~~~~~~~
cave.cpp:123:59: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
123 | for(int h = kojiblok*sz; h < (kojiblok+1)*sz && h < moze.size(); h++){
| ~~^~~~~~~~~~~~~
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