import std.stdio, std.string, std.conv; import std.range, std.algorithm, std.array, std.typecons, std.container; import std.math, std.numeric, core.bitop; void main() { int n, m; scan(n, m); auto a = iota(m).map!(i => readln.split.to!(int[])).array; auto q = iota(n).map!(i => readln.split.to!(int[])).array; auto ac = new long[][](m + 1, m + 1); foreach (i ; 1 .. m + 1) { foreach (j ; 1 .. m + 1) { ac[i][j] = ac[i-1][j] + ac[i][j-1] - ac[i-1][j-1] + a[i-1][j-1]; } } debug { writefln("%(%s\n%)", ac); } auto cnt = new long[][](m + 1, m + 1); foreach (i ; 0 .. m) { foreach (j ; i + 1 .. m + 1) { foreach (k ; 0 .. m) { foreach (l ; k + 1 .. m + 1) { long wa = ac[j][l] - ac[i][l] - ac[j][k] + ac[i][k]; if (wa == 0) { cnt[i][k]++; cnt[j][k]--; cnt[i][l]--; cnt[j][l]++; } } } } } foreach (i ; 0 .. m + 1) { foreach (j ; 0 .. m + 1) { cnt[i][j] += (i > 0 ? cnt[i-1][j] : 0) + (j > 0 ? cnt[i][j-1] : 0) - (i > 0 && j > 0 ? cnt[i-1][j-1] : 0); } } foreach (i ; 0 .. n) { int x = q[i][0]; int y = q[i][1]; x--, y--; writeln(cnt[x][y]); } } void scan(T...)(ref T args) { import std.stdio : readln; import std.algorithm : splitter; import std.conv : to; import std.range.primitives; auto line = readln().splitter(); foreach (ref arg; args) { arg = line.front.to!(typeof(arg)); line.popFront(); } assert(line.empty); } void fillAll(R, T)(ref R arr, T value) { static if (is(typeof(arr[] = value))) { arr[] = value; } else { foreach (ref e; arr) { fillAll(e, value); } } }