Submission #910675

#	Time	Username	Problem	Language	Result	Execution time	Memory
910675		ibm2006	Street Lamps (APIO19_street_lamps)	C++17	20 / 100	117 ms	18512 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[1100000],q,ee,d[1100000];
char c[110000];
int main()
{
    scanf("%lld %lld",&n,&q);
    for(i=1;i<=n;i++)
    {
        scanf("%01lld",&a[i]);
    }
    for(i=1;i<=n;i++)
    {
        if(a[i]==1)
        {
            d[i]=0;
        }
        else

            d[i]=-1;
    }
    for(ee=1;ee<=q;ee++)
    {
        scanf("\n%s",c);
        if(c[0]=='t')
        {
            scanf("%lld",&x);
            if(a[x]==1)
            b[x]+=ee-d[x];
            else
            {
                d[x]=ee;
            }
            a[x]^=1;
            continue;
        }
        scanf("%lld %lld",&x,&y);
        if(a[x]==1)
        printf("%lld\n",b[x]+ee-d[x]);
        else
            printf("%lld\n",b[x]);
    }
}

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:25:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |         scanf("\n%s",c);
      |         ~~~~~^~~~~~~~~~
street_lamps.cpp:28:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |             scanf("%lld",&x);
      |             ~~~~~^~~~~~~~~~~
street_lamps.cpp:38:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |         scanf("%lld %lld",&x,&y);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~

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