結果
| 問題 |
No.2848 Birthday Hit and Blow
|
| コンテスト | |
| ユーザー |
 pockyny
|
| 提出日時 | 2025-08-18 03:34:45 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 69 ms / 2,000 ms |
| コード長 | 6,531 bytes |
| コンパイル時間 | 1,094 ms |
| コンパイル使用メモリ | 91,824 KB |
| 実行使用メモリ | 25,960 KB |
| 平均クエリ数 | 703.50 |
| 最終ジャッジ日時 | 2025-08-18 03:34:48 |
| 合計ジャッジ時間 | 2,176 ms |
|
ジャッジサーバーID （参考情報） |
judge5 / judge4 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 1 |
コンパイルメッセージ
main.cpp: In function ‘void solve()’:
main.cpp:81:38: warning: ‘d’ may be used uninitialized [-Wmaybe-uninitialized]
81 | if(st[i]=='x') st[i] = c;
main.cpp:63:18: note: ‘d’ was declared here
63 | char d;
| ^
ソースコード
#include <iostream>
#include <string>
#include <cassert>
#include <vector>
#include <algorithm>
using namespace std;
bool isLocal = false;
string ans_str;
int c = 0;
pair<int,int> calc(string s){
c++;
assert(ans_str.size()==4);
int i,j,h = 0,b = 0;
for(i=0;i<s.size();i++){
if(s[i]==ans_str[i]){
h++;
}else{
for(j=0;j<4;j++){
if(s[i]==ans_str[j]) b++;
}
}
}
return {h,b};
}
pair<int,int> query(string s){
if(isLocal) return calc(s);
cout << "? " << s << endl;
int h,b; cin >> h >> b;
return {h,b};
}
void ans(string s){
if(isLocal){
if(s!=ans_str){
cout << "WA " << s << endl;
}
assert(s==ans_str);
return;
}
cout << "! " << s << endl;
int x; cin >> x;
}
void solve(){
c = 0;
int i,j;
pair<int,int> p = query("0123");
if(p.first + p.second==4){
vector<string> v = {"0213","0312","0321","1023","1203"};
string st = "1230";
if(p.first==4) st = "0123";
for(auto s:v){
auto [h,_] = query(s);
if(h==4) st = s;
}
ans(st);
}else if(p.first + p.second==3){
if(p.first==3){
// 0x23 or 012x
int h_mn = 4,c_mn = 4,c_mx = 0;
char c = '9';
char d;
for(i=4;i<9;i++){
string st = "0x23";
string str = st;
str[1] = (char)('0' + i);
auto [h,b] = query(str);
h_mn = min(h_mn,h);
c_mn = min(c_mn,h + b);
if(c_mx<h + b){
c_mx = h + b;
d = (char)('0' + i);
}
}
string st = "";
if(h_mn==3) st = "0x23";
else st = "012x";
if(c_mn<c_mx) c = d;
for(i=0;i<4;i++){
if(st[i]=='x') st[i] = c;
}
ans(st);
}else if(p.first==2){
char c = '9';
vector<string> v = {"0x13","0x13","0x13","0x21","0x21"};
vector<int> h,b;
for(i=4;i<9;i++){
char d = (char)('0' + i);
string s = v[i - 4];
for(j=0;j<4;j++){
if(s[j]=='x') s[j] = d;
}
auto [_h,_b] = query(s);
h.push_back(_h); b.push_back(_b);
}
if(h[0] + b[0]>h[1] + b[1]) c = '4';
if(h[1] + b[1]>h[0] + b[0]) c = '5';
if(h[2] + b[2]>h[0] + b[0]) c = '6';
if(h[3] + b[3]>h[4] + b[4]) c = '7';
if(h[4] + b[4]>h[3] + b[3]) c = '8';
string s = "032x";
for(i=0;i<5;i++){
int _h = h[i];
if(c - '0' - 4==i) _h--;
if(_h>=3) s = v[i];
}
for(i=0;i<4;i++){
if(s[i]=='x') s[i] = c;
}
ans(s);
}else if(p.first==1){
char c = '9';
vector<string> v = {"0x12","102x","021x","0x31","031x"};
vector<int> h,b;
for(i=4;i<9;i++){
char d = (char)('0' + i);
string s = v[i - 4];
for(j=0;j<4;j++){
if(s[j]=='x') s[j] = d;
}
auto [_h,_b] = query(s);
h.push_back(_h); b.push_back(_b);
}
if(h[0] + b[0]>h[1] + b[1]) c = '4';
if(h[1] + b[1]>h[0] + b[0]) c = '5';
if(h[2] + b[2]>h[0] + b[0]) c = '6';
if(h[3] + b[3]>h[4] + b[4]) c = '7';
if(h[4] + b[4]>h[3] + b[3]) c = '8';
string s;
for(i=0;i<5;i++){
int _h = h[i];
if(c - '0' - 4==i) _h--;
if(_h>=3) s = v[i];
}
for(i=0;i<4;i++){
if(s[i]=='x') s[i] = c;
}
ans(s);
}else{
string s = "1209";
for(i=4;i<9;i++){
string st = "120x";
st[3] = (char)('0' + i);
auto [h,_] = query(st);
if(h==4) s = st;
}
ans(s);
}
}else if(p.first + p.second==2){
auto [h1,b1] = query("0435");
auto [h2,b2] = query("0637");
int c1 = h1 + b1 - 1,c2 = h2 + b2 - 1;
int c3 = 2 - c1 - c2;
string X = "",Y = "";
if(c1==2) X = "46", Y = "57";
if(c2==2) X = "46", Y = "57";
if(c3==2) X = "48", Y = "59";
if(c1==1 && c2==1) X = "45", Y = "67";
if(c1==1 && c3==1) X = "45", Y = "89";
if(c2==1 && c3==1) X = "67", Y = "89";
string ss = "0x3y";
ss[1] = X[0]; ss[3] = Y[0];
auto [h4,b4] = query(ss);
ss[1] = X[0]; ss[3] = Y[1];
auto [h5,b5] = query(ss);
int c4 = h4 + b4 - 1,c5 = h5 + b5 - 1;
string st = "0x1y";
if(c4==2){
if(h4==3) st[1] = X[0], st[3] = Y[0];
else st[1] = Y[0], st[3] = X[0];
}else if(c5==2){
if(h5==3) st[1] = X[0], st[3] = Y[1];
else st[1] = Y[1], st[3] = X[0];
}else{
if(c4<c5){
if(h5>=2) st[1] = X[1], st[3] = Y[1];
else st[1] = Y[1], st[3] = X[1];
}else{
if(h4>=2) st[1] = X[1], st[3] = Y[0];
else st[1] = Y[0], st[3] = X[1];
}
}
auto [h6,b6] = query(st);
if(h6!=4) st[2] = '2';
ans(st);
}else{
assert(false);
}
assert(c<=6);
}
int main(){
int i,t; cin >> t;
while(t){
t--;
solve();
}
// vector<int> month = {1,2,3,4,5,6,7,8,9,10,11,12};
// vector<int> days = {31,28,31,30,31,30,31,31,30,31,30,31};
// for(i=0;i<month.size();i++){
// for(int j=1;j<=days[i];j++){
// int num = 100*month[i] + j;
// string s;
// for(int k=0;k<4;k++){
// s.push_back((char)('0' + (num)%10));
// num /= 10;
// }
// reverse(s.begin(),s.end());
// bool f = false;
// for(int l=0;l<s.size();l++){
// for(int r=l + 1;r<s.size();r++){
// if(s[l]==s[r]) f = true;
// }
// }
// if(f) continue;
// ans_str = s;
// cout << "check " << s << endl;
// solve();
// }
// }
}