oj.uz

답안 #973921

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
973921 2024-05-02T12:58:41 Z sleepntsheep Guess the number (BOI20_guess) C
0 / 100
 0 ms 344 KB 
#include<stdio.h>

int n;
int main()
{
    scanf("%d",&n);
    int lb=-1,ub=n+1;
    while(ub-lb>1)
    {
        int mid=lb+(ub-lb)/2,x;
        printf("? %d\n",mid);fflush(stdout);
        scanf("%d",&x);
        if(x==0)return printf("= %d\n",mid),fflush(stdout),0;
        if(x<0)lb=mid;
        else ub=mid;
    }
}

Compilation message

Guess.c: In function 'main':
Guess.c:6:5: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
    6 |     scanf("%d",&n);
      |     ^~~~~~~~~~~~~~
Guess.c:12:9: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |         scanf("%d",&x);
      |         ^~~~~~~~~~~~~~

Subtask #1
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Incorrect 0 ms 344 KB Integer parameter [name=k] equals to 0, violates the range [1, 29]
18 Halted 0 ms 0 KB -

Subtask #2
0 / 71.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Incorrect 0 ms 344 KB Integer parameter [name=k] equals to 0, violates the range [1, 29]
18 Halted 0 ms 0 KB -