oj.uz

Submission #300467

# Submission time Handle Problem Language Result Execution time Memory
300467 2020-09-17T07:36:48 Z bacegen4o Guess the number (BOI20_guess) C
100 / 100
 1 ms 416 KB 
#pragma GCC optimize "-O3"
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<math.h>
#include<assert.h>
#include<stdbool.h>
#include<limits.h>

int main(){
    int N;
    scanf("%d", &N);
    int L = 1;
    int R = N;
    while (L < R){
        int mid = (L + R) / 2;
        printf("? %d\n", mid); fflush(stdout);
        int fb;
        scanf("%d", &fb);
        if (fb == 0){
            L = R = mid;
            break;
        }
        else if (fb < 0){
            L = mid + 1;
        }
        else{
            R = mid - 1;
        }
    }
    printf("= %d\n", L);
    return 0;
}

Compilation message

Guess.c: In function 'main':
Guess.c:12:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   12 |     scanf("%d", &N);
      |     ^~~~~~~~~~~~~~~
Guess.c:19:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   19 |         scanf("%d", &fb);
      |         ^~~~~~~~~~~~~~~~

Subtask #1
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 0 ms 256 KB Output is correct
17 Correct 0 ms 256 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 0 ms 256 KB Output is correct
21 Correct 0 ms 288 KB Output is correct
22 Correct 0 ms 256 KB Output is correct
23 Correct 1 ms 256 KB Output is correct
24 Correct 0 ms 256 KB Output is correct
25 Correct 0 ms 256 KB Output is correct
26 Correct 0 ms 256 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 0 ms 256 KB Output is correct
29 Correct 0 ms 256 KB Output is correct
30 Correct 0 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 0 ms 256 KB Output is correct
34 Correct 0 ms 256 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 0 ms 256 KB Output is correct
37 Correct 1 ms 256 KB Output is correct
38 Correct 0 ms 256 KB Output is correct
39 Correct 0 ms 256 KB Output is correct
40 Correct 0 ms 256 KB Output is correct
41 Correct 0 ms 256 KB Output is correct
42 Correct 0 ms 256 KB Output is correct
43 Correct 0 ms 256 KB Output is correct
44 Correct 0 ms 256 KB Output is correct

Subtask #2
71.0 / 71.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 0 ms 256 KB Output is correct
17 Correct 0 ms 256 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 0 ms 256 KB Output is correct
21 Correct 0 ms 288 KB Output is correct
22 Correct 0 ms 256 KB Output is correct
23 Correct 1 ms 256 KB Output is correct
24 Correct 0 ms 256 KB Output is correct
25 Correct 0 ms 256 KB Output is correct
26 Correct 0 ms 256 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 0 ms 256 KB Output is correct
29 Correct 0 ms 256 KB Output is correct
30 Correct 0 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 0 ms 256 KB Output is correct
34 Correct 0 ms 256 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 0 ms 256 KB Output is correct
37 Correct 1 ms 256 KB Output is correct
38 Correct 0 ms 256 KB Output is correct
39 Correct 0 ms 256 KB Output is correct
40 Correct 0 ms 256 KB Output is correct
41 Correct 0 ms 256 KB Output is correct
42 Correct 0 ms 256 KB Output is correct
43 Correct 0 ms 256 KB Output is correct
44 Correct 0 ms 256 KB Output is correct
45 Correct 1 ms 256 KB Output is correct
46 Correct 1 ms 256 KB Output is correct
47 Correct 1 ms 384 KB Output is correct
48 Correct 1 ms 256 KB Output is correct
49 Correct 1 ms 256 KB Output is correct
50 Correct 1 ms 256 KB Output is correct
51 Correct 1 ms 256 KB Output is correct
52 Correct 1 ms 256 KB Output is correct
53 Correct 0 ms 256 KB Output is correct
54 Correct 1 ms 256 KB Output is correct
55 Correct 1 ms 256 KB Output is correct
56 Correct 1 ms 256 KB Output is correct
57 Correct 1 ms 256 KB Output is correct
58 Correct 1 ms 384 KB Output is correct
59 Correct 1 ms 288 KB Output is correct
60 Correct 1 ms 256 KB Output is correct
61 Correct 1 ms 256 KB Output is correct
62 Correct 1 ms 256 KB Output is correct
63 Correct 1 ms 256 KB Output is correct
64 Correct 1 ms 256 KB Output is correct
65 Correct 1 ms 256 KB Output is correct
66 Correct 1 ms 256 KB Output is correct
67 Correct 1 ms 256 KB Output is correct
68 Correct 0 ms 288 KB Output is correct
69 Correct 1 ms 416 KB Output is correct
70 Correct 1 ms 256 KB Output is correct
71 Correct 0 ms 256 KB Output is correct
72 Correct 1 ms 256 KB Output is correct
73 Correct 1 ms 256 KB Output is correct
74 Correct 0 ms 256 KB Output is correct
75 Correct 1 ms 256 KB Output is correct
76 Correct 0 ms 256 KB Output is correct
77 Correct 1 ms 256 KB Output is correct
78 Correct 1 ms 256 KB Output is correct
79 Correct 1 ms 256 KB Output is correct
80 Correct 0 ms 256 KB Output is correct
81 Correct 1 ms 256 KB Output is correct
82 Correct 1 ms 256 KB Output is correct
83 Correct 1 ms 256 KB Output is correct
84 Correct 1 ms 256 KB Output is correct
85 Correct 1 ms 256 KB Output is correct
86 Correct 1 ms 256 KB Output is correct
87 Correct 1 ms 256 KB Output is correct
88 Correct 1 ms 256 KB Output is correct
89 Correct 1 ms 256 KB Output is correct
90 Correct 1 ms 256 KB Output is correct
91 Correct 1 ms 256 KB Output is correct
92 Correct 1 ms 256 KB Output is correct
93 Correct 1 ms 288 KB Output is correct
94 Correct 1 ms 256 KB Output is correct
95 Correct 1 ms 256 KB Output is correct
96 Correct 1 ms 256 KB Output is correct
97 Correct 1 ms 256 KB Output is correct
98 Correct 1 ms 256 KB Output is correct
99 Correct 0 ms 256 KB Output is correct
100 Correct 1 ms 256 KB Output is correct
101 Correct 1 ms 256 KB Output is correct
102 Correct 1 ms 256 KB Output is correct
103 Correct 1 ms 256 KB Output is correct
104 Correct 1 ms 256 KB Output is correct
105 Correct 1 ms 256 KB Output is correct
106 Correct 1 ms 256 KB Output is correct
107 Correct 1 ms 256 KB Output is correct
108 Correct 1 ms 256 KB Output is correct
109 Correct 1 ms 416 KB Output is correct