Submission #1007116

#	Time	Username	Problem	Language	Result	Execution time	Memory
1007116		christinelynn	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

#include<bits/stdc++.h>

/* Pragmaaa */
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")

/*  Primitive Data   */
#define ll long long
#define db double

/*  Pair Macro */
#define pii pair<int,int>
#define pll pair<ll,ll>
#define fi first
#define sc second

/* Vector Macro */
#define vi vector<int>
#define vll vector<ll>
#define pb push_back

/*  All Rounder  */
#define all(x) x.begin(),x.end()
#define forn(i,n) for(int (i) = 1; i<= int (n); i++)
#define for0(i,n) for(int (i) = 0; i < int (n); i++)

#define INF 1e9 
#define LLINF 1e18
#define nl '\n'
#define tab '	'

// Hati-hati kalau mau ngeflush tapi endl jadi nya '\n'
#define flushmanual ios_base::sync_with_stdio(false); cin.tie(NULL)

using namespace std;

string guess_sequence(int N){
  
  char a[9];
  a[1] = 'A', a[2] = 'B', a[3] = 'X',a[4] = 'Y';
  forn(i,4)forn(j,4)forn(k,4){
    string c = a[i] + a[j] + a[k];
    if(press(c) == 3){
      return c;
    }
  }
  
}
       

             

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:24:27: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   24 | #define forn(i,n) for(int (i) = 1; i<= int (n); i++)
      |                           ^
combo.cpp:41:3: note: in expansion of macro 'forn'
   41 |   forn(i,4)forn(j,4)forn(k,4){
      |   ^~~~
combo.cpp:24:27: warning: unnecessary parentheses in declaration of 'j' [-Wparentheses]
   24 | #define forn(i,n) for(int (i) = 1; i<= int (n); i++)
      |                           ^
combo.cpp:41:12: note: in expansion of macro 'forn'
   41 |   forn(i,4)forn(j,4)forn(k,4){
      |            ^~~~
combo.cpp:24:27: warning: unnecessary parentheses in declaration of 'k' [-Wparentheses]
   24 | #define forn(i,n) for(int (i) = 1; i<= int (n); i++)
      |                           ^
combo.cpp:41:21: note: in expansion of macro 'forn'
   41 |   forn(i,4)forn(j,4)forn(k,4){
      |                     ^~~~
combo.cpp:42:28: error: conversion from 'int' to non-scalar type 'std::string' {aka 'std::__cxx11::basic_string<char>'} requested
   42 |     string c = a[i] + a[j] + a[k];
      |                ~~~~~~~~~~~~^~~~~~
combo.cpp:43:8: error: 'press' was not declared in this scope
   43 |     if(press(c) == 3){
      |        ^~~~~
combo.cpp:48:1: warning: control reaches end of non-void function [-Wreturn-type]
   48 | }
      | ^