Submission #201665

#	Time	Username	Problem	Language	Result	Execution time	Memory
201665		SamAnd	Unija (COCI17_unija)	C++17	100 / 100	441 ms	20728 KiB

unija

#include <bits/stdc++.h>
using namespace std;
const int N = 1000006;
struct ban
{
    int x, y;
};
bool operator<(const ban& a, const ban& b)
{
    return a.x < b.x;
}

int n;
ban a[N];

int main()
{
    scanf("%d", &n);
    for (int i = 1; i <= n; ++i)
    {
        scanf("%d%d", &a[i].x, &a[i].y);
        a[i].x /= 2;
    }
    sort(a + 1, a + n + 1);
    long long ans = 0;
    int maxu = 0;
    for (int i = n; i >= 1; --i)
    {
        maxu = max(maxu, a[i].y);
        ans += (a[i].x - a[i - 1].x) * 1LL * maxu;
    }
    ans *= 2;
    printf("%lld\n", ans);
    return 0;
}

Compilation message (stderr)

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

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10