Submission #910661

#	Time	Username	Problem	Language	Result	Execution time	Memory
910661		ibm2006	Street Lamps (APIO19_street_lamps)	C++17	20 / 100	5020 ms	38036 KiB

street_lamps

#include<bits/stdc++.h>
using namespace std;
typedef long long int ll;
ll n,i,j,k,l,r,x,y,z,w,s,t,a[1100000],b[1100][1100],q,ee;
char c[110000];
int main()
{
    scanf("%lld %lld",&n,&q);
    for(i=1;i<=n;i++)
    {
        scanf("%01lld",&a[i]);
    }
    for(ee=0;ee<q;ee++)
    {
        scanf("\n%s",c);
        if(c[0]=='t')
        {
            scanf("%lld",&x);

            for(i=1;i<=n;i++)
            {
                s=1;
                for(j=i;j<=n;j++)
                {
                    s&=a[j];
                    b[i][j]+=s;
                }
            }
            a[x]^=1;
            continue;
        }
        for(i=1;i<=n;i++)
            {
                s=1;
                for(j=i;j<=n;j++)
                {
                    s&=a[j];
                    b[i][j]+=s;
                }
            }
        scanf("%lld %lld",&x,&y);
        printf("%lld\n",b[x][y-1]);
    }
}

Compilation message (stderr)

street_lamps.cpp: In function 'int main()':
street_lamps.cpp:8:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |     scanf("%lld %lld",&n,&q);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
street_lamps.cpp:11:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |         scanf("%01lld",&a[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~
street_lamps.cpp:15:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |         scanf("\n%s",c);
      |         ~~~~~^~~~~~~~~~
street_lamps.cpp:18:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |             scanf("%lld",&x);
      |             ~~~~~^~~~~~~~~~~
street_lamps.cpp:41:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |         scanf("%lld %lld",&x,&y);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20