Submission #673124

#	Time	Username	Problem	Language	Result	Execution time	Memory
673124		hariaakas646	Colors (BOI20_colors)	C++17	0 / 100	1 ms	208 KiB

Colors

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#include <iostream>
#include <bits/stdc++.h>

using namespace std;

#define SCD(t) scanf("%d",&t)
#define SCLD(t) scanf("%ld",&t)
#define SCLLD(t) scanf("%lld",&t)
#define SCLLU(t) scanf("%llu",&t)
#define SCC(t) scanf("%c",&t)
#define SCS(t) scanf("%s",t)
#define SCF(t) scanf("%f",&t)
#define SCLF(t) scanf("%lf",&t)
#define FOR(i, j, k, in) for (int i=j ; i<k ; i+=in)
#define for_range(i, j) FOR(i, 0, j, 1)
#define all(cont) cont.begin(), cont.end()
#define MP make_pair
#define PB push_back

typedef pair<int, int> PII;
typedef vector<int> VI;
typedef vector<string> VS;
typedef vector<PII> VII;
typedef vector<VI> VVI;
typedef map<int,int> MPII;
typedef set<int> SETI;
typedef multiset<int> MSETI;
typedef long int int32;
typedef unsigned long int uint32;
typedef long long int int64;
typedef unsigned long long int  uint64;


int main()
{
    uint64 n;
    SCLLU(n);
    uint64 l = 0; uint64 r = n;
    uint64 pred = n / 2;
    printf("? %llu\n", pred);
    int rep;
    SCD(rep);
    pred = 1;
    int inc = 1;
    while(l != r) {
        printf("? %llu\n", pred);
        SCD(rep);
        if(rep == 0) {
            l = (r+l)/2 + 1;
            inc = 1;
        }
        else {
            r = (r+l)/2;
            inc = 1;
        }
        pred = pred + inc * (r + l)/2;
        
    }
    printf("= %llu", l);
    
    
    
    
    return 0;
}

Compilation message (stderr)

Colors.cpp: In function 'int main()':
Colors.cpp:17:23: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 | #define SCLLU(t) scanf("%llu",&t)
      |                  ~~~~~^~~~~~~~~~~
Colors.cpp:45:5: note: in expansion of macro 'SCLLU'
   45 |     SCLLU(n);
      |     ^~~~~
Colors.cpp:14:21: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 | #define SCD(t) scanf("%d",&t)
      |                ~~~~~^~~~~~~~~
Colors.cpp:50:5: note: in expansion of macro 'SCD'
   50 |     SCD(rep);
      |     ^~~
Colors.cpp:14:21: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 | #define SCD(t) scanf("%d",&t)
      |                ~~~~~^~~~~~~~~
Colors.cpp:55:9: note: in expansion of macro 'SCD'
   55 |         SCD(rep);
      |         ^~~

• Subtask 1: 0 / 9
• Subtask 2: 0 / 13
• Subtask 3: 0 / 21
• Subtask 4: 0 / 24
• Subtask 5: 0 / 33