【Codeforces 947B】 Producting Snow

【题目链接】

点击打开链接

【算法】

前缀和 + 堆

【代码】

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll MAXN = 1e5;

ll N,i,ans,sum,tmp;
ll v[MAXN+],t[MAXN+];
priority_queue<ll,vector<ll>,greater<ll> > q;

template <typename T> inline void read(T &x) {
    ll f = ; x = ;
    char c = getchar();
    for (; !isdigit(c); c = getchar()) { if (c == '-') f = -f; }
    for (; isdigit(c); c = getchar())  x = (x << ) + (x << ) + c - '';
    x *= f;
}
template <typename T> inline void write(T x) {
    if (x < ) { putchar('-'); x = -x; }
    if (x > ) write(x/);
    putchar(x%+'');
}
template <typename T> inline void writeln(T x) {
    write(x);
    puts("");
}

int main() {

    read(N);
    for (i = ; i <= N; i++) read(v[i]);
    for (i = ; i <= N; i++) read(t[i]);
    for (i = ; i <= N; i++) {
        ans = ;
        q.push(sum+v[i]);
        sum += t[i];
        while (!q.empty() && q.top() <= sum) {
            tmp = q.top();
            q.pop();
            ans += tmp - (sum - t[i]);
        }
        ans += q.size() * t[i];
        write(ans);
        if (i < N) putchar(' ');
    }
    puts("");

    return ;
}