Submission #53953657

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Source Code Expand

// LUOGU_RID: 160485096
#include<bits/stdc++.h>
#define Gc() getchar()
#define Me(x,y) memset(x,y,sizeof(x))
#define Mc(x,y) memcpy(x,y,sizeof(x))
#define d(x,y) ((m)*(x-1)+(y))
#define R(n) (rnd()%(n)+1)
#define Pc(x) putchar(x)
#define LB lower_bound
#define UB upper_bound
#define fi first
#define se second
#define eb emplace_back
#define all(x) x.begin(),x.end()
using namespace std;using ll=long long;using db=double;using lb=long db;using ui=unsigned;using ull=unsigned long long;using pii=pair<int,int>;
const int N=3e3+5,M=(1<<20)+5,K=1000+5,mod=998244353,Mod=mod-1;const db eps=1e-9;const int INF=1e9+7;mt19937 rnd(181766);
#define Tp template<typename T>
#define Ts template<typename T,typename... Ar>
namespace Debug{
	Tp void _debug(char* f,T t){cerr<<f<<'='<<t<<endl;}
	Ts void _debug(char* f,T x,Ar... y){while(*f!=',') cerr<<*f++;cerr<<'='<<x<<",";_debug(f+1,y...);}
	#ifdef LOCAL
	#define gdb(...) _debug((char*)#__VA_ARGS__,__VA_ARGS__)
	#else 
	#define gdb(...) void()
	#endif
}using namespace Debug;
int len[N],n;
int qry(string s){
	cout<<"? "<<s<<endl;
	fflush(stdout);
	int x;cin>>x;return x;
}
int check(string s){return qry(s)==n-s.size();}
char s[62];
string calc(int l,int r){
	if(l==r){
		string c(len[l],s[l]);
		return c;
	}
	int m=l+r>>1;
	string a1=calc(l,m),a2=calc(m+1,r);
	string t1,t2=a1;
	while(!a2.empty()){
		while(!check(t1+a2[0]+t2)) t1+=t2[0],t2.erase(t2.begin());
		t1+=a2[0];a2.erase(a2.begin());
	}
	return t1+t2;
}
void Solve(){
	int i,j;
	for(i=0;i<26;i++) s[i]=i+'a';
	for(i=0;i<26;i++) s[i+26]=i+'A';
	for(i=0;i<10;i++) s[i+26+26]=i+'0';
	for(i=0;i<62;i++){
		string c(128,s[i]);
		len[i]=128-qry(c);
	}
	n=accumulate(len,len+62,0);
	string ans=calc(0,61);
	cout<<"! "<<ans<<endl;fflush(stdout);
}
int main(){
	// freopen("1.in","r",stdin);freopen("1.out","w",stdout);
	int t=1;
	// scanf("%d",&t);
	while(t--) Solve();
	cerr<<clock()*1.0/CLOCKS_PER_SEC<<'\n';
}

Submission Info

Compile Error

Main.cpp: In function ‘int check(std::string)’:
Main.cpp:34:34: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::__cxx11::basic_string<char>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
   34 | int check(string s){return qry(s)==n-s.size();}
      |                            ~~~~~~^~~~~~~~~~~~
Main.cpp: In function ‘std::string calc(int, int)’:
Main.cpp:41:16: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses]
   41 |         int m=l+r>>1;
      |               ~^~
Main.cpp: In function ‘void Solve()’:
Main.cpp:51:15: warning: unused variable ‘j’ [-Wunused-variable]
   51 |         int i,j;
      |               ^

Judge Result