Submission #3234155

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Source Code Expand

//waz
#include <bits/stdc++.h>

using namespace std;

#define mp make_pair
#define pb push_back
#define fi first
#define se second
#define ALL(x) (x).begin(), (x).end()
#define SZ(x) ((int)((x).size()))

typedef pair<int, int> PII;
typedef vector<int> VI;
typedef long long int64;
typedef unsigned int uint;
typedef unsigned long long uint64;

#define gi(x) ((x) = F())
#define gii(x, y) (gi(x), gi(y))
#define giii(x, y, z) (gii(x, y), gi(z))

int F()
{
	char ch;
	int x, a;
	while (ch = getchar(), (ch < '0' || ch > '9') && ch != '-');
	if (ch == '-') ch = getchar(), a = -1;
	else a = 1;
	x = ch - '0';
	while (ch = getchar(), ch >= '0' && ch <= '9')
		x = (x << 1) + (x << 3) + ch - '0';
	return a * x;
}

const int N = 1e5 + 10;

char str[N];

int n;

long long ans;

int main()
{
	scanf("%s", str + 1);
	n = strlen(str + 1);
	for (int i = 1; i <= n; ++i)
	{
		if (str[i] == 'U')
		{
			ans += 2 * (i - 1);
		}
		else
			ans += i - 1;
	}
	//cerr << ans << endl;
	reverse(str + 1, str + n + 1);
	//cnt = 0;
	for (int i = 1; i <= n; ++i)
	{
		if (str[i] == 'D')
		{
			ans += 2 * (i - 1);
		}
		else
			ans += i - 1;
	}
	printf("%lld\n", ans);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:46:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s", str + 1);
                      ^

Judge Result