Submission #374937

#	Time	Username	Problem	Language	Result	Execution time	Memory
374937		lakshith_	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

    #include "combo.h"
     
    std::string l;
     
    std::string guess_sequence(int n){
        int start = ' ';
        std::string r = "";
        if(press("AB")>=1){
			if(press("A")>=1)start = 'A';
			else start = 'B';
		}else{
				if(press("X")>=1)start = 'X';
				else start = 'Y';
		}
        if(press(start == 'A')){
            r += 'A';
            l = "BXY";
        }else if(start = 'B'){
            r += 'B';
            l = "AXY";
        }else if(start == 'X'){
            r += 'X';
            l = "BAY";
        }else{
            r += 'Y';
            l = "ABX";
        }
      	if(n==1)return r;
        int k = 1;
        for(int i=1;i<n-1;i++){
            std::string a,b,c,d;
            a = r + l[0]+l[0];
            b = r + l[0]+l[1];
            c = r + l[0]+l[2];
            d = r + l[1];
            int p = press(a+b+c+d);
            p -= k;
            if(p==0){
                r += l[2];
            }else if(p==1){
                r += l[1];
            }else
            {
                r += l[0];
            }
            k++;
        }
        for(int i=0;i<3;i++){
            if(press(r+l[i])==n){
                r += l[i];
                break;
            }
        }
        return r;
    }

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:15:24: error: could not convert '(start == 65)' from 'bool' to 'std::string' {aka 'std::__cxx11::basic_string<char>'}
   15 |         if(press(start == 'A')){
      |                  ~~~~~~^~~~~~
      |                        |
      |                        bool
combo.cpp:18:24: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   18 |         }else if(start = 'B'){
      |                  ~~~~~~^~~~~