Submission #134721

#	Time	Username	Problem	Language	Result	Execution time	Memory
134721		mirbek01	Wombats (IOI13_wombats)	C++11	9 / 100	81 ms	8312 KiB

wombats

#include "wombats.h"
#include <bits/stdc++.h>

using namespace std;

const int N = 1e4 + 2;

int fen[N], v[N][2];

void upd(int pos, int val){
	for(int i = pos; i > 0; i = (i & (i + 1)) - 1)
		fen[i] += val;
}

int get(int l){
	int ret = 0;
	for(int i = l; i < N; i |= i + 1)
		ret += fen[i];
	return ret;
}

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

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

}

void changeV(int P, int Q, int W) {
	upd(P + 1, -v[P][Q]);
	v[P][Q] = W;
	upd(P + 1, W);
}

int escape(int x, int y) {
	return get(x + 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]
  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