Submission #380848

#	Time	Username	Problem	Language	Result	Execution time	Memory
380848		fl0rian	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

using namespace std;

std::string guess_sequence(int N) {
    string ans="";
	
  	string lets[4]={"A","B","X","Y"};
  
    int dontUse=-1;
    int found=0;
    int i=0;

    for(int i=0;i<4&&dontUse==-1;i++)
        if(press(lets[i]))
            dontUse=i;

    ans+=lets[dontUse];

    for(int i=1;i<N;i++){
        found=0;
        for(int j=0;j<4 && !found;j++)
            if(dontUse!=j && press(ans + lets[j])==i+1 ){
                ans+=lets[j];
                found=1;
            }
    }

    //cout<<ans;

    return ans;
}

Compilation message (stderr)

combo.cpp:4:6: error: 'string' in namespace 'std' does not name a type
    4 | std::string guess_sequence(int N) {
      |      ^~~~~~
combo.cpp:1:1: note: 'std::string' is defined in header '<string>'; did you forget to '#include <string>'?
  +++ |+#include <string>
    1 |