Submission #945514

#	Time	Username	Problem	Language	Result	Execution time	Memory
945514		dugersuren	Snake (CEOI08_snake)	C++17	Compilation error	0 ms	0 KiB

snake

#include "snakelib.h"
#include<bits/stdc++.h>
using namespace std;
int k,l,r,minLen,maxLen,mid1,mid2;
char a1, a2;
int ask_snake(){
    k=get_speed();
    minLen=1;maxLen=12122;
    l=0;r=12122;    
    for(int i=1;i<=13;++i){
		mid1=l+(r-l)/3;
		mid2=r–(r-l)/3;
		ask_snake(mid1,mid2,&a1,&a2);
        if(a1=='f'){
        	if(a2='f') maxLen=mid2-l,r=mid2+k-1;
        	if(a2='s')minLen=mid2-mid1+2,maxLen=mid2-l,r=mid2+k;
        	if(a2='b')minLen=mid2-mid1+3,r+=k;        	
		}
		if(a1='s'){
			if(a2='s'){
				return minLen=r-l+1;
			}
			l=mid1;
			if(a2='f')maxLen=mid2-l,r=mid2+k-1;
			if(a2='b')maxLen=r-mid1+1,r=mid2+k;
			
		}
		if(a1='b'){
			l=mid1+1;
			if(a2='f')maxLen=mid2-mid1-1,r=mid2+k-1;
        	if(a2='s')maxLen=mid2-mid1,r=mid2+k,r=mid2+k;
        	if(a2='b')minLen=r-mid1+1,r+=k;  
		}
    }
    int guess=(maxLen+minLen)/2;
    tell_length(guess);
}

Compilation message (stderr)

snake.cpp:12:8: error: extended character – is not valid in an identifier
   12 |   mid2=r–(r-l)/3;
      |        ^
snake.cpp: In function 'int ask_snake()':
snake.cpp:12:8: error: 'r\U00002013' was not declared in this scope
   12 |   mid2=r–(r-l)/3;
      |        ^~
snake.cpp:15:15: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   15 |          if(a2='f') maxLen=mid2-l,r=mid2+k-1;
      |             ~~^~~~
snake.cpp:16:15: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   16 |          if(a2='s')minLen=mid2-mid1+2,maxLen=mid2-l,r=mid2+k;
      |             ~~^~~~
snake.cpp:17:15: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   17 |          if(a2='b')minLen=mid2-mid1+3,r+=k;
      |             ~~^~~~
snake.cpp:19:8: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   19 |   if(a1='s'){
      |      ~~^~~~
snake.cpp:20:9: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   20 |    if(a2='s'){
      |       ~~^~~~
snake.cpp:24:9: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   24 |    if(a2='f')maxLen=mid2-l,r=mid2+k-1;
      |       ~~^~~~
snake.cpp:25:9: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   25 |    if(a2='b')maxLen=r-mid1+1,r=mid2+k;
      |       ~~^~~~
snake.cpp:28:8: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   28 |   if(a1='b'){
      |      ~~^~~~
snake.cpp:30:9: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   30 |    if(a2='f')maxLen=mid2-mid1-1,r=mid2+k-1;
      |       ~~^~~~
snake.cpp:31:15: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   31 |          if(a2='s')maxLen=mid2-mid1,r=mid2+k,r=mid2+k;
      |             ~~^~~~
snake.cpp:32:15: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   32 |          if(a2='b')minLen=r-mid1+1,r+=k;
      |             ~~^~~~
snake.cpp:36:16: warning: control reaches end of non-void function [-Wreturn-type]
   36 |     tell_length(guess);
      |     ~~~~~~~~~~~^~~~~~~