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Submission #974208

# Submission time Handle Problem Language Result Execution time Memory
974208 2024-05-03T06:20:56 Z sleepntsheep Bitwise (BOI06_bitwise) C
25 / 100
 1 ms 600 KB 
#include<stdio.h>

#define N 10000
int n,p,k[N],at[N+1];long long z,l[N],r[N];

int main()
{
    scanf("%d%d",&n,&p);
    for(int i=0;i<p;++i)
        scanf("%d",k+i);
    for(int i=0,len=0;i<p;++i)
    {
        at[i]=len;
        at[i+1]=len+=k[i];
        for(int j=at[i];j<at[i+1];++j)
            scanf("%lld%lld",l+j,r+j),l[j]=-2e10;
    }

    for(long long b=31;b>=0;--b)
    {
        long long set=1ll<<b;
        for(int i=0;i<p;++i)
        {
            int can=0;
            for(int j=at[i];j<at[i+1];++j) can+=(l[j]<=set&&set<=r[j]);
            if(can==0)
                set=0;
        }
        if(set)
            for(int i=0;i<p;++i)
            {
                int tuna=0;
                for(int j=at[i];j<at[i+1];++j)
                    if(l[j]<=set&&set<=r[j])tuna=j;
                l[tuna]-=set,r[tuna]-=set;
            }
        z|=set;
    }
    printf("%lld",z);
}

Compilation message

bitwise.c: In function 'main':
bitwise.c:8:5: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |     scanf("%d%d",&n,&p);
      |     ^~~~~~~~~~~~~~~~~~~
bitwise.c:10:9: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |         scanf("%d",k+i);
      |         ^~~~~~~~~~~~~~~
bitwise.c:16:13: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |             scanf("%lld%lld",l+j,r+j),l[j]=-2e10;
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
25.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB Output isn't correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Incorrect 0 ms 348 KB Output isn't correct
5 Incorrect 1 ms 348 KB Output isn't correct
6 Incorrect 0 ms 348 KB Output isn't correct
7 Incorrect 0 ms 600 KB Output isn't correct
8 Correct 0 ms 344 KB Output is correct
9 Incorrect 0 ms 348 KB Output isn't correct
10 Correct 0 ms 348 KB Output is correct
11 Incorrect 0 ms 348 KB Output isn't correct
12 Correct 1 ms 348 KB Output is correct
13 Incorrect 0 ms 348 KB Output isn't correct
14 Incorrect 0 ms 348 KB Output isn't correct
15 Incorrect 0 ms 348 KB Output isn't correct
16 Correct 0 ms 348 KB Output is correct
17 Incorrect 0 ms 344 KB Output isn't correct
18 Incorrect 0 ms 348 KB Output isn't correct
19 Incorrect 0 ms 348 KB Output isn't correct
20 Incorrect 0 ms 420 KB Output isn't correct