Submission #41530

#	Time	Username	Problem	Language	Result	Execution time	Memory
41530		chonka	Art Exhibition (JOI18_art)	C++98	0 / 100	5 ms	4216 KiB

art

#include<iostream>
#include<stdio.h>
#include<algorithm>
using namespace std ;

#define MAXN 500007

int n ;
pair < int , int > a[ MAXN ] ;
long long pref[ MAXN ] ;

void input ( ) {
    scanf ( "%d" , &n ) ;
    int i ;
    for ( i = 1 ; i <= n ; i ++ ) {
        scanf ( "%d%d" , &a[ i ].first , &a[ i ].second ) ;
    }
    sort ( a + 1 , a + n + 1 ) ;
    for ( i = 1 ; i <= n ; i ++ ) {
        pref[ i ] = ( pref[ i - 1 ] + a[ i ].second ) ;
    }
}

void solve ( ) {
    int i ;
    long long mn = -a[ 1 ].first ;
    long long ans = 0 ;
    for ( i = 1 ; i <= n ; i ++ ) {
        if ( mn > pref[ i - 1 ] - a[ i ].first ) {
            mn = pref[ i - 1 ] - a[ i ].first ;
        }
        if ( ans < pref[ i ] - a[ i ].first - mn ) {
            ans = pref[ i ] - a[ i ].first - mn ;
        }
    }
    printf ( "%I64d\n" , ans ) ;
}

int main ( ) {
    input ( ) ;
    solve ( ) ;
    return 0 ;
}

Compilation message (stderr)

art.cpp: In function 'void solve()':
art.cpp:36:30: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
     printf ( "%I64d\n" , ans ) ;
                              ^
art.cpp: In function 'void input()':
art.cpp:13:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf ( "%d" , &n ) ;
                         ^
art.cpp:16:59: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf ( "%d%d" , &a[ i ].first , &a[ i ].second ) ;
                                                           ^

• Subtask 1: 0 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 50