Submission #95594

#	Time	Username	Problem	Language	Result	Execution time	Memory
95594		tqbfjotld	Combo (IOI18_combo)	C++14	30 / 100	64 ms	428 KiB

combo

#include "combo.h"
#include <string>
#include <vector>
using namespace std;



string guess_sequence(int N) {
    string moves[4] = {"A","B","X","Y"};
    string start;
    for (int x = 0; x<4; x++){
        if (x==3) {start = moves[3]; break;}
        if (press(moves[x])==1){
            start = moves[x];
            break;
        }
    }
    vector<string> newmoves;
    for (int x = 0; x<4; x++){
        if (moves[x][0]!=start[0]){
            newmoves.push_back(moves[x]);
        }
    }


    for (int x = 1; x<N; x++){
        for (int y = 0; y<2; y++){
            if (press(start+newmoves[y])==x+1){
                start+=newmoves[y];
                break;
            }

        }
        if (start.size()<x+1) start+=newmoves[2];

    }
    return start;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:34:25: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   34 |         if (start.size()<x+1) start+=newmoves[2];
      |             ~~~~~~~~~~~~^~~~

• Subtask 1: 5 / 5
• Subtask 2: 25 / 95