链接:https://ac.nowcoder.com/acm/contest/549/H
这题数据弱的不得了,我改的代码各种数据错误都能过,比如
3
1 1 1
5 5 5 最后输出5或者10都过了,(!- -)
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define N 1000100
int a[N], n, k, h[N], w[N], s[N];
ll ans = 0;
int main() {
scanf("%d", &n);
for(int i = 1; i <= n; ++i) scanf("%d", &a[i]);
for(int i = 1; i <= n; ++i) scanf("%d", &h[i]), ans = max(ans, (ll)h[i] * a[i]);
int top = 0;
a[n+1] = a[n];
for(int i = 1; i <= n+1; ++i) {
ll W = 0;
while(top && h[s[top]] >= h[i]) {
W += w[top];
ans = max(ans, (ll)W * h[s[top]]);
--top;
}
s[++top] = i; w[top] = W + a[i];
//cout<<i<<" "<<top<<" "<<s[top]<<" "<<w[top]<<endl;
}
printf("%lld\n", ans);
}