Submission #199932

#	Time	Username	Problem	Language	Result	Execution time	Memory
199932		SamAnd	Potatoes and fertilizers (LMIO19_bulves)	C++17	24 / 100	152 ms	11000 KiB

bulves

#include <bits/stdc++.h>
using namespace std;
const int N = 500005;

int n;
int a[N], b[N];
long long sa, sb;

void solv1()
{
    long long ans = 0;
    int j = 1;
    for (int i = 1; i <= n; ++i)
    {
        while (1)
        {
            if (b[j] >= a[i])
            {
                ans += abs(i - j) * 1LL * a[i];
                b[j] -= a[i];
                a[i] = 0;
                break;
            }
            else
            {
                ans += abs(i - j) * 1LL * b[j];
                a[i] -= b[j];
                b[j] = 0;
                ++j;
            }
        }
    }
    printf("%lld\n", ans);
}

int main()
{
    scanf("%d", &n);
    for (int i = 1; i <= n; ++i)
    {
        scanf("%d%d", &a[i], &b[i]);
        sa += a[i];
        sb += b[i];
    }
    if (sa == sb)
        solv1();
    return 0;
}

Compilation message (stderr)

bulves.cpp: In function 'int main()':
bulves.cpp:38:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
bulves.cpp:41:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d", &a[i], &b[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 24 / 24
• Subtask 2: 0 / 10
• Subtask 3: 0 / 20
• Subtask 4: 0 / 10
• Subtask 5: 0 / 36