Submission #1159008

#	Time	Username	Problem	Language	Result	Execution time	Memory
1159008		arkanefury	Combo (IOI18_combo)	C++20	Compilation error	0 ms	0 KiB

combo

#include "combo.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define in insert
#define lb lower_bound
#define F first
#define S second
#define sz size()
#define int long long
#define all(v) v.begin(),v.end()
#define FOR1(x, n) for(int j = x; j <= n; j ++)
#define FOR(x, n, m, d) for(int x = n; x <= m; x += d)
#define FORR(x, n, m, d) for(int x = n; x >= m; x -= d)
#define nikita ios_base::sync_with_stdio(0), cin.tie(0);
const int N =  4e5+5;
int a[N], b[N], d[N], pref[N], L[N], R[N];
int n,m,k,sum=0,x,y, ans, r, cnt, l, mod = 1e9+7;
string str = "";
string guess_sequence(int N){
    string s = "";
    ans = 0;
    while(ans != N){
        s = str;
        
    FOR(i, 0, N-1-s.sz,1)s+='A';
    sum = press(s);
    if(sum > ans){
        FOR(i, 1, sum-ans, 1)str += 'A';
    }
    ans = str.sz;
    s = str;
    FOR(i, 0, N-1-s.sz,1)s+='B';
    sum = press(s);
    if(sum > ans){
        FOR(i, 1, sum-ans, 1)str += 'B';
    }
    ans = str.sz;
    s = str;

    FOR(i, 0, N-1-s.sz,1)s+='X';
    sum = press(s);
    if(sum > ans){
        FOR(i, 1, sum-ans, 1)str += 'X';
    }
    ans = str.sz;
    s = str;
    FOR(i, 0, N-1-s.sz,1)s+='Y';
    sum = press(s);
    if(sum > ans){
        FOR(i, 1, sum-ans, 1)str += 'Y';
    }
    ans = str.sz;
    s = str;
    }
    return press(str);
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(long long int)':
combo.cpp:56:17: error: could not convert 'press(std::__cxx11::basic_string<char>(str))' from 'int' to 'std::string' {aka 'std::__cxx11::basic_string<char>'}
   56 |     return press(str);
      |            ~~~~~^~~~~
      |                 |
      |                 int