Submission #431145

#	Time	Username	Problem	Language	Result	Execution time	Memory
431145		juggernaut	Aliens (IOI07_aliens)	C++17	0 / 100	2 ms	200 KiB

aliens

#include<bits/stdc++.h>
#define fr first
#define sc second
using namespace std;
void usaco(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
typedef long long ll;
#define USING_ORDERED_SET 0
#if USING_ORDERED_SET
#include<bits/extc++.h>
using namespace __gnu_pbds;
template<class T>using ordered_set=tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;
#endif
template<class T>void umax(T &a,T b){if(a<b)a=b;}
template<class T>void umin(T &a,T b){if(b<a)a=b;}
#ifdef IOI2021SG
    #define printl(args...)printf(args)
#else
    #define printl(args...)((void)0)
#endif
bool query(int x,int y){
    printf("examine %d %d\n",x,y);
    fflush(stdout);
    string s;
    cin>>s;
    return s=="true";
}
int main(){
    ll n,x,y,x1,y1,x2,y2;
    scanf("%lld%lld%lld",&n,&x,&y);
    int l,r;
    l=x+1;
    r=x+n;
    while(l<r){
        int mid=(l+r)>>1;
        if(query(mid,y))l=mid+1;
        else r=mid;
    }
    x2=l;
    x1=l-n-1;
    l=y+1;
    r=y+n;
    while(l<r){
        int mid=(l+r)>>1;
        if(query(x,mid))l=mid+1;
        else r=mid;
    }
    y2=l;
    y1=l-n-1;
    printf("solution %d %d\n",(x1+x2)/2,(y1+y2)/2);
}

Compilation message (stderr)

aliens.cpp: In function 'int main()':
aliens.cpp:49:23: warning: format '%d' expects argument of type 'int', but argument 2 has type 'll' {aka 'long long int'} [-Wformat=]
   49 |     printf("solution %d %d\n",(x1+x2)/2,(y1+y2)/2);
      |                      ~^       ~~~~~~~~~
      |                       |              |
      |                       int            ll {aka long long int}
      |                      %lld
aliens.cpp:49:26: warning: format '%d' expects argument of type 'int', but argument 3 has type 'll' {aka 'long long int'} [-Wformat=]
   49 |     printf("solution %d %d\n",(x1+x2)/2,(y1+y2)/2);
      |                         ~^              ~~~~~~~~~
      |                          |                     |
      |                          int                   ll {aka long long int}
      |                         %lld
aliens.cpp: In function 'void usaco(std::string)':
aliens.cpp:5:29: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 | void usaco(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
      |                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
aliens.cpp:5:66: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 | void usaco(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
      |                                                           ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
aliens.cpp: In function 'int main()':
aliens.cpp:29:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |     scanf("%lld%lld%lld",&n,&x,&y);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10