提出 #8229211

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ソースコード 拡げる

#include<bits/stdc++.h>
#define fo(i, x, y) for(int i = x, B = y; i <= B; i ++)
#define ff(i, x, y) for(int i = x, B = y; i <  B; i ++)
#define fd(i, x, y) for(int i = x, B = y; i >= B; i --)
#define ll long long
#define pp printf
#define hh pp("\n")
using namespace std;

const int N = 1e5 + 5;

int n, s;
int a[N], p[N];
ll b[N];
int m;

ll dg(int x, int y, int z) {
	if(y <= m) {
		if(z == y) return s - a[y];
		return s - a[x];
	}
	if(x > m) {
		if(z == x) return a[x] - s;
		if(z == y) return a[y] - s;
	}
	if(b[x] >= b[y]) {
		b[x] += b[y];
		return dg(x, y - 1, x) + (z == y ? (a[y] - a[x]) : 0);
	} else {
		b[y] += b[x];
		return dg(x + 1, y, y) + (z == x ? (a[y] - a[x]) : 0);
	}
}

int main() {
	scanf("%d %d", &n, &s);
	fo(i, 1, n) scanf("%d %d", &a[i], &p[i]);
	fo(i, 1, n) if(a[i] < s) m = i;
	fo(i, 1, n) b[i] = p[i];
	ll ans = dg(1, n, 1);
	fo(i, 1, n) b[i] = p[i];
	ans = max(ans, dg(1, n, n));
	pp("%lld\n", ans);
}

提出情報

コンパイルエラー

./Main.cpp: In function ‘int main()’:
./Main.cpp:36:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &s);
                        ^
./Main.cpp:37:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  fo(i, 1, n) scanf("%d %d", &a[i], &p[i]);
                                          ^

ジャッジ結果