Submission #346018

#	Time	Username	Problem	Language	Result	Execution time	Memory
346018		Iwanttobreakfree	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#include "combo.h"
using namespace std;
string guess_sequence(int N) {
string p="";
string imp;
char S[N];
int guardado,coins;
bool A,B,X,Y;
  p = "AB";
  for (int i = 0; i < N-2; ++i) {
    p+='B';
  }
  coins = press(p);
  if(coins==0){//Empieza x X o Y
  	p = "XA";
  for (int i = 0; i < N-2; ++i) {
    p+='A';
  }
  coins=press(p);
  if (coins==0){//Empieza x Y
  	p="Y";
  	Y=false;
  }
  else if (coins==1){//Empieza x X y no sigue A
  	p="X";
  	A=false;
  }
  else {
  	p="X";
  	for(int c=1;c<coins;c++){//Empieza x X y sigue A
  	p+='A';
  }
  A=false;
  }
  }
  else if(coins==1){//Empieza x A o x B
  	p="BX";
  	for (int i = 0; i < N-2; ++i) {
    p+= 'X';
  }
  coins=press(p);
  if(coins==0){//Empieza x A y no sigue B
  	p="A";
  	B=false;
  }
  else if (coins==1){//Empieza x B y no sigue X
  	p="B";
  	X=false;
  }
  else {
  	p="B";
  	for(int c=1;c<coins;c++){//Empieza x B y sigue X
  	p+='X';
  }
  X=false;
  }
  }
  else {//Empieza x A y sigue B
  p="A";
  	for(int c=1;c<coins;c++){
  	p+='B';
  	
  }
  B=false;
  }
  guardado=coins;
  while(coins<N){
  	imp="";
  	if (p[0]=='A'){
  		for (int i = 0; i < N-coins; ++i) {
  			if (B) imp+= 'B';
   			else if (X) imp+= 'X';
   			else if (Y) imp += 'Y';
  }
	  }
	else if (p[0]=='B'){
  		for (int i = 0; i < N-coins; ++i) {
  			if (A) 	imp += 'A';
   			else if (X) imp += 'X';
   			else if (Y) imp += 'Y';
  }
	  }
	else if (p[0]=='X'){
  		for (int i = 0; i < N-coins; ++i) {
  			if (A) imp += 'A';
   			else if (B)	imp += 'B';
   			else if (Y)	imp += 'Y';
  }
}
	else if (p[0]=='Y'){
  		for (int i = 0; i < N-coins; ++i) {
  			if (A) imp += 'A';
   			else if (B) imp += 'B';
   			else if (X) imp += 'X';
  }
}
   coins=press(p+imp);
   if (coins>guardado){
   	A=true;
   	B=true;
   	X=true;
   	Y=true;
   	while (coins-guardado){
   		p+=imp[0];
   		guardado++;
	   }
   }
   if (p[coins-1]=='A') A=false;
else if(p[coins-1]=='B') B=false;
else if(p[coins-1]=='X') X=false;
else if(p[coins-1]=='Y') Y=false;
  }
  while(int a=0;a<coins;a++) S[a]=p[a];
  return S;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:118:16: error: expected ')' before ';' token
  118 |   while(int a=0;a<coins;a++) S[a]=p[a];
      |        ~       ^
      |                )
combo.cpp:118:3: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
  118 |   while(int a=0;a<coins;a++) S[a]=p[a];
      |   ^~~~~
combo.cpp:118:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'while'
  118 |   while(int a=0;a<coins;a++) S[a]=p[a];
      |                 ^
combo.cpp:118:13: warning: unused variable 'a' [-Wunused-variable]
  118 |   while(int a=0;a<coins;a++) S[a]=p[a];
      |             ^
combo.cpp:118:17: error: 'a' was not declared in this scope
  118 |   while(int a=0;a<coins;a++) S[a]=p[a];
      |                 ^