Submission #3032549


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#include <bits/stdc++.h>
using namespace std;

#define NDEBUG
#ifdef DEBUG
#include "../cout11.h"
#undef NDEBUG
#endif
#include <cassert>

typedef long long ll;
typedef long double Double;
typedef unsigned long long ull;
typedef pair<int,int> ii;
typedef pair<ll,ll> llll;
typedef pair<double,double> dd;

typedef vector<int> vi;
typedef vector<vector<int>> vvi;
typedef vector<ii> vii;
typedef vector<vector<ii>> vvii;
typedef vector<ll> vll;
typedef vector<string> vs;
typedef vector<double> vd;
typedef vector<long double> vD;

#define sz(a)  int((a).size())
#define pb  push_back
#define FOR(var,from,to) for(int var=(from);var<=(to);++var)
#define rep(var,n)  for(int var=0;var<(n);++var)
#define rep1(var,n)  for(int var=1;var<=(n);++var)
#define repC2(vari,varj,n)  for(int vari=0;vari<(n)-1;++vari)for(int varj=vari+1;varj<(n);++varj)
#define ALL(c)  (c).begin(),(c).end()
#define RALL(c)  (c).rbegin(),(c).rend()
#define tr(i,c)  for(auto i=(c).begin(); i!=(c).end(); ++i)
#define found(s,e)  ((s).find(e)!=(s).end())
#define mset(arr,val)  memset(arr,val,sizeof(arr))
#define mid(x,y) ((x)+((y)-(x))/2)
#define IN(x,a,b) ((a)<=(x)&&(x)<=(b))
#define cons make_pair



int N, M, Q;
vi L, R;
vvi imo;

void prepare() {
    imo.assign(N+1, vi(N+1, 0));

    rep(i,M){
        int from = L[i], to = R[i];
        ++imo[from][to];
    }

    for (int r=N; r>0; --r){
        rep1(c,N) {
            imo[r][c] += imo[r][c-1];
        }
        if (r < N) {
            rep(c,N+1)
                imo[r][c] += imo[r+1][c];
        }
    }
#ifdef DEBUG
    for (int r=1;r<=N;++r) {
        for (int c=1;c<=N;++c) {
            fprintf(stderr, " %2d", imo[r][c]);
        }
        fprintf(stderr, "\n");
    }
#endif
}

int query(int p, int q) {
    return imo[p][q];
}

int main() {
    cin >> N >> M >> Q;
    L.resize(M); R.resize(M);
    rep(i,M) cin >> L[i] >> R[i];

    prepare();

    rep(i,Q) {
        int p,q; cin >> p >> q;
        cout << query(p,q) << endl;
    }
    return 0;
}

Submission Info

Submission Time
Task D - AtCoder Express 2
User naoya_t
Language C++14 (GCC 5.4.1)
Score 400
Code Size 2087 Byte
Status
Exec Time 299 ms
Memory 3456 KB

Test Cases

Set Name Score / Max Score Test Cases
Sample 0 / 0 sample_01.txt, sample_02.txt, sample_03.txt
All 400 / 400 in01.txt, in02.txt, in03.txt, in04.txt, in05.txt, in06.txt, in07.txt, in08.txt, in09.txt, in10.txt, sample_01.txt, sample_02.txt, sample_03.txt
Case Name Status Exec Time Memory
in01.txt 1 ms 256 KB
in02.txt 1 ms 256 KB
in03.txt 1 ms 256 KB
in04.txt 1 ms 256 KB
in05.txt 297 ms 3328 KB
in06.txt 299 ms 3328 KB
in07.txt 297 ms 3328 KB
in08.txt 297 ms 3328 KB
in09.txt 289 ms 2944 KB
in10.txt 293 ms 3456 KB
sample_01.txt 1 ms 256 KB
sample_02.txt 1 ms 256 KB
sample_03.txt 1 ms 256 KB