線段樹水題,需要稍微思考一下。
手寫線段樹感覺好爽!!!線段樹好神!!!
#include <cstdio>
#include <cstring>
#include <cstdlib>
#include <ctime>
#include <climits>
#include <cmath>
#include <iostream>
#include <string>
#include <vector>
#include <set>
#include <map>
#include <list>
#include <queue>
#include <stack>
#include <deque>
#include <algorithm>
using namespace std;
typedef long long ll;
#define lhs rt<<1
#define rhs rt<<1|1
const int maxn = 200010;
int h, w, n, ans;
int x, c[maxn*4];
int query(int x, int rt = 1, int L = 1, int R = h)
{
if (L == R)
{
c[rt] -= x;
return L;
}
int M = (L+R) >> 1, ret;
if (c[lhs] >= x) ret = query(x, lhs, L, M);
else ret = query(x, rhs, M+1, R);
c[rt] = max(c[lhs], c[rhs]);
return ret;
}
void init(int rt = 1, int L = 1, int R = h)
{
c[rt] = w;
if (L == R) return;
int M = (L+R) >> 1;
init(lhs, L, M);
init(rhs, M+1, R);
}
int main()
{
while (scanf("%d%d%d", &h, &w, &n) == 3)
{
h = min(h, n);
init();
for (int i=0;i<n;i++)
{
scanf("%d", &x);
if (c[1] < x) puts("-1");
else printf("%d\n", query(x));
}
}
return 0;
}