Submission #1068922

#	Time	Username	Problem	Language	Result	Execution time	Memory
1068922		blackslex	Wombats (IOI13_wombats)	C++17	9 / 100	38 ms	8284 KiB

wombats

#include "wombats.h"
#include<bits/stdc++.h>
#define lsb(x) (x &(-x))

using namespace std;

const int N = 5005;
int n, m, fwk[N];

void upd (int idx, int val) {
    for (idx++; idx < N; idx += lsb(idx)) fwk[idx] += val;
}

int qr (int idx) {
    int res = 0;
    for (idx++; idx; idx -= lsb(idx)) res += fwk[idx];
    return res;
}

void init(int R, int C, int H[5000][200], int V[5000][200]) {
    n = R; m = C;
    for (int i = 0; i < n - 1; i++) {
        for (int j = 0; j < m; j++) upd(i + 1, V[i][j]);
    }
}

void changeH(int P, int Q, int W) {
}

void changeV(int P, int Q, int W) {
    int cur = qr(P + 1) - qr(P);
    upd(P + 1, -cur); upd(P + 1, W);
}

int escape(int V1, int V2) {
    return qr(n - 1);
}

Compilation message (stderr)

grader.c: In function 'int main()':
grader.c:15:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
   15 |  int res;
      |      ^~~

• Subtask 1: 9 / 9
• Subtask 2: 0 / 12
• Subtask 3: 0 / 16
• Subtask 4: 0 / 18
• Subtask 5: 0 / 21
• Subtask 6: 0 / 24