Submission #211188

#	Time	Username	Problem	Language	Result	Execution time	Memory
211188		DodgeBallMan	Sterilizing Spray (JOI15_sterilizing)	C++14	5 / 100	5072 ms	5076 KiB

sterilizing

#include <bits/stdc++.h>

using namespace std;

const int N = 1e5 + 10;
int n, q;
long long seg[N<<2], k;

void update( int pos, long long val, int l = 1, int r = n, int idx = 1 ) {
    if( l > pos || r < pos ) return ;
    if( l == r ) return void( seg[idx] = val );
    int m = l + r >> 1;
    if( pos <= m ) update( pos, val, l, m, idx<<1 );
    else update( pos, val, m+1, r, idx<<1|1 );
    seg[idx] = seg[idx<<1] + seg[idx<<1|1];
}

void spray( int ll, int rr, int l = 1, int r = n, int idx = 1 ) {
    if( l > rr || r < ll ) return ;
    if( l == r ) return void( seg[idx] /= k );
    int m = l + r >> 1;
    spray( ll, rr, l, m, idx<<1 ), spray( ll, rr, m+1, r, idx<<1|1 );
    seg[idx] = seg[idx<<1] + seg[idx<<1|1];
}

long long query( int ll, int rr, int l = 1, int r = n, int idx = 1 ) {
    if( l > rr || r < ll ) return 0;
    if( l >= ll && r <= rr ) return seg[idx];
    int m = l + r >> 1;
    return query( ll, rr, l, m, idx<<1 ) + query( ll, rr, m+1, r, idx<<1|1 );
}

int main()
{
    scanf("%d %d %lld",&n,&q,&k);
    for( int i = 1 ; i <= n ; i++ ) {
        long long a;
        scanf("%lld",&a);
        update( i, a );
    }
    while( q-- ) {
        int t, a, b;
        scanf("%d %d %d",&t,&a,&b);
        if( t == 1 ) update( a, ( long long )b );
        else if( t == 2 ) spray( a, b );
        else printf("%lld\n",query( a, b ));
    }
    return 0;
}

Compilation message (stderr)

sterilizing.cpp: In function 'void update(int, long long int, int, int, int)':
sterilizing.cpp:12:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int m = l + r >> 1;
             ~~^~~
sterilizing.cpp: In function 'void spray(int, int, int, int, int)':
sterilizing.cpp:21:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int m = l + r >> 1;
             ~~^~~
sterilizing.cpp: In function 'long long int query(int, int, int, int, int)':
sterilizing.cpp:29:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int m = l + r >> 1;
             ~~^~~
sterilizing.cpp: In function 'int main()':
sterilizing.cpp:35:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %lld",&n,&q,&k);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~
sterilizing.cpp:38:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld",&a);
         ~~~~~^~~~~~~~~~~
sterilizing.cpp:43:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %d",&t,&a,&b);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 75