Submission #2403926

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Source Code Expand

#include <iostream>
#include <cstdio>
#include <algorithm>
using namespace std;

typedef long long int lli;

const lli maxn = lli(2e5)+5;

pair<lli, lli> A[maxn];

int main(void)
{
	lli n, res1 = 0, res2 = 0, res3 = 0, alleq = 0;
	scanf("%lld", &n);
	for(lli i = 0;i < n;i++)
	{
		scanf("%lld%lld", &A[i].first, &A[i].second);
		alleq = max(alleq, lli(A[i].first != A[i].second));
	}

	if(!alleq)
	{
		printf("0\n");
		return 0;
	}

	for(lli i = 0;i < n;i++)
	{
		if(A[i].first <= A[i].second) res1 += A[i].first;
	}

	for(lli i = 0;i < n;i++)
	{
		if(A[i].first > A[i].second) res2 += A[i].first;
	}

	for(lli i = 0;i < n;i++)
	{
		if(A[i].first > A[i].second) res3 = max(res3, res2-A[i].second);
	}
	printf("%lld\n", res1+res3);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:15:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld", &n);
                   ^
./Main.cpp:18:47: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld%lld", &A[i].first, &A[i].second);
                                               ^

Judge Result