제출 #648871

#제출 시각아이디문제언어결과실행 시간메모리
648871Litusiano콤보 (IOI18_combo)C++14
100 / 100
44 ms772 KiB
#include<iostream> #include <cstdio> #include <cstdlib> #include <algorithm> #include <string> #include "combo.h" using namespace std; string guess_sequence(int N){ string ans; int x = 1; if(press("AB") > 0){ if(press("A")){ ans+='A'; x = 0; } else ans+='B'; } else{ if(press("X")){ ans+='X'; x = 2; } else{ ans+='Y'; x = 3; } } string all = "ABXY"; string pos; for(int i = 0; i<all.size(); ++i){ if(i == x) continue; pos+=all[i]; } //cout<<pos<<endl; /* Faig una sola opcio amb 0 dos opcions amb 1 cap amb 2 */ for(int i = 2; i<=N-1; ++i){ string s0 = ans; s0+=pos[0]; string s1,s2,s3; s1 = s2 = s3 = ans; s1+=pos[1]; s1+=pos[0]; s2+=pos[1]; s2+=pos[1]; s3+=pos[1]; s3+=pos[2]; string tot = s0+s1+s2+s3; //if(i == 2) cout<<s0<<" "<<s1<<" "<<s2<<" "<<s3<<endl; //cout<<s0<<"\n1"<<s1<<"\n2"<<s2<<"\n3"<<s3<<"\n"<<endl; //cout<<4*N<<" "<<tot.size()<<endl; int c = press(s0+s1+s2+s3); //if(i == 2) cout<<c<<" "<<i<<endl; if(c == i) ans+=pos[0]; else if(c == i+1) ans+=pos[1]; else ans+=pos[2]; } for(int i = max(2,N); i<=N; ++i){ string tot = ans; tot+=pos[0]; tot+=ans; tot+=pos[1]; //cout<<tot<<" "<<press(tot)<<endl; if(press(tot) >= i){ tot = ans; tot+=pos[0]; if(press(tot) >= i) ans+=pos[0]; else ans+=pos[1]; } else{ ans+=pos[2]; } } return ans; }

컴파일 시 표준 에러 (stderr) 메시지

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:31:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |   for(int i = 0; i<all.size(); ++i){
      |                  ~^~~~~~~~~~~
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