Submission #68391

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
68391	2018-08-17 04:17:10	nvmdava	Aliens (IOI07_aliens)	C++17	100 / 100	5 ms	556 KiB

aliens

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#include <bits/stdc++.h>
using namespace std;
long long n;
char s[10];
bool ask(int x, int y){
  if(x > n || x < 1 || y > n || y < 1){
    return 0;
  }
  printf("examine %d %d\n", x, y);
  fflush(stdout);
  scanf("%s", &s);
  return (s[0] == 't');
}
long long x, y, m;
int main(){
  scanf("%d %d %d",&n,&x,&y);
  long long left, right, up, down;
  
  long long l = 0, r = x;
  while(l + 1 != r){
    int m = (l + r) / 2;
    if(ask(m, y)){
      r = m;
    } else {
      l = m;
    }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

aliens.cpp: In function 'bool ask(int, int)':
aliens.cpp:13:16: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'char (*)[10]' [-Wformat=]
  scanf("%s", &s);
              ~~^
aliens.cpp: In function 'int main()':
aliens.cpp:20:27: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
  scanf("%d %d %d",&n,&x,&y);
                   ~~      ^
aliens.cpp:20:27: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'long long int*' [-Wformat=]
aliens.cpp:20:27: warning: format '%d' expects argument of type 'int*', but argument 4 has type 'long long int*' [-Wformat=]
aliens.cpp:98:49: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
  printf("solution %d %d\n", x + 2 * m, y + 2 * m);
                             ~~~~~~~~~           ^
aliens.cpp:98:49: warning: format '%d' expects argument of type 'int', but argument 3 has type 'long long int' [-Wformat=]
aliens.cpp: In function 'bool ask(int, int)':
aliens.cpp:13:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s", &s);
  ~~~~~^~~~~~~~~~
aliens.cpp: In function 'int main()':
aliens.cpp:20:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d %d",&n,&x,&y);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10