Submission #170279

#	Time	Username	Problem	Language	Result	Execution time	Memory
170279		Akashi	Art Exhibition (JOI18_art)	C++14	100 / 100	277 ms	21112 KiB

art

#include <bits/stdc++.h>
using namespace std;

struct art{
    long long x;
    int y;
    bool operator < (const art &aux)const{
        if(x != aux.x) return x < aux.x;
        return y < aux.y;
    }
};

int n;
art a[500005];

int main()
{
    scanf("%d", &n);

    for(int i = 1; i <= n ; ++i)
        scanf("%lld%d", &a[i].x, &a[i].y);

    sort(a + 1, a + n + 1);

    long long Sol = a[1].y, Sum = a[1].y, Max = a[1].x;
    for(int i = 2; i <= n ; ++i){
        Max = max(Max, -Sum + a[i].x);
        Sum = Sum + a[i].y;
        Sol = max(Sol, Sum + Max - a[i].x);
    }

    printf("%lld", Sol);

    return 0;
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:18:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
art.cpp:21:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld%d", &a[i].x, &a[i].y);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

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