Submission #79140

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
79140	2018-10-11 11:55:01	Sherazin	Aliens (IOI07_aliens)	C++14	100 / 100	4 ms	620 KiB

aliens

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#include <bits/stdc++.h>
#define long long long
#define pii pair<long, long>
#define x first
#define y second
using namespace std;
long n, a, b, m;
map<pii, long> mp;
void print(const char *c, long x, long y) { printf(c, x, y), fflush(stdout); }
bool get(long x, long y) {
  if(x < 1 || x > n || y < 1 || y > n) return false;
  if(!mp.count(pii(x, y))) {
    char s[10];
    print("examine %lld %lld\n", x, y);
    scanf(" %s", s);
    mp[pii(x, y)] = (s[0] == 't');
  }
  return mp[pii(x, y)];
}
long find(long x, long y, long dx, long dy) {
  long d = 1;
  while(get(x + dx*d, y + dy*d)) d <<= 1;
  long l = d >> 1, r = d;
  while(l < r) {
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

aliens.cpp: In function 'bool get(long long int, long long int)':
aliens.cpp:20:8: 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:39:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld %lld %lld", &n, &a, &b);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• 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