competitive-programming-library

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:heavy_check_mark: hack/fastio_scanner_and_printer.yosupo.test.cpp

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Depends on

Code

#define PROBLEM "https://judge.yosupo.jp/problem/many_aplusb"
#include "hack/fastio_scanner.hpp"
#include "hack/fastio_printer.hpp"

scanner sc;
printer pr;

int main() {
    int t = sc.get<int>();
    while (t --) {
        uint64_t a = sc.get<uint64_t>();
        uint64_t b = sc.get<uint64_t>();
        pr.put<uint64_t>(a + b);
        pr.put<char>('\n');
    }
    return 0;
}

#line 1 "hack/fastio_scanner_and_printer.yosupo.test.cpp"
#define PROBLEM "https://judge.yosupo.jp/problem/many_aplusb"
#line 2 "hack/fastio_scanner.hpp"
#include <algorithm>
#include <cassert>
#include <cstdlib>
#include <cstring>
#include <string>
#include <type_traits>
#include <unistd.h>

class scanner {
    static constexpr int N = 131072;
    static constexpr int K = 64;
    char buf[K + N];
    int l = 0;
    int r = 0;
    void flush() {
        if (K < r - l) return;
        memmove(buf + K - (r - l), buf + l, r - l);
        l = K - (r - l);
        r = K + read(STDIN_FILENO, buf + K, N);
        assert (l < r);
    }
    void prepare() {
        flush();
        while (isspace(buf[l])) {
            ++ l;
            flush();
        }
    }
public:
    scanner() = default;
    scanner(const scanner &) = delete;
    scanner & operator = (const scanner &) = delete;
    template <class Char, std::enable_if_t<std::is_same<Char, char>::value, int> = 0>
    inline char get() {
        prepare();
        return buf[l ++];
    }
    template <class String, std::enable_if_t<std::is_same<String, std::string>::value, int> = 0>
    std::string get() {
        prepare();
        std::string s;
        do {
            s.push_back(buf[l ++]);
            if (r == l) flush();
        } while (not isspace(buf[l]));
        return s;
    }
    template <class Integer, std::enable_if_t<std::is_integral<Integer>::value, int> = 0>
    Integer get() {
        prepare();
        bool is_negative = false;
        if (std::is_signed<Integer>::value and buf[l] == '-') {
            is_negative = true;
            ++ l;
        }
        Integer x = 0;
        while (l < r and isdigit(buf[l])) {
            x = 10 * x + buf[l] - '0';
            ++ l;
        }
        if (std::is_signed<Integer>::value and is_negative) {
            x *= -1;
        }
        return x;
    }
};
#line 6 "hack/fastio_printer.hpp"
#include <type_traits>
#include <unistd.h>

class printer {
    static constexpr int N = 131072;
    static constexpr int K = 64;
    char buf[N];
    int i = 0;
    inline void flush() {
        write(STDOUT_FILENO, buf, i);
        i = 0;
    }
public:
    printer() = default;
    printer(const printer &) = delete;
    printer & operator = (const printer &) = delete;
    ~printer() {
        flush();
    }
    template <class Char, std::enable_if_t<std::is_same<Char, char>::value, int> = 0>
    inline void put(char c) {
        if (i == N) flush();
        buf[i ++] = c;
    }
    template <class String, std::enable_if_t<std::is_same<String, std::string>::value, int> = 0>
    void put(const std::string & s) {
        for (int l = 0; l < (int)s.length(); ) {
            if (i == N) flush();
            int r = std::min<int>(s.length(), l + (N - i));
            memcpy(buf + i, s.data() + l, r - l);
            i += r - l;
            l = r;
        }
    }
    template <class Integer, std::enable_if_t<std::is_integral<Integer>::value, int> = 0>
    void put(Integer x) {
        if (N - i < K) flush();
        if (std::is_signed<Integer>::value and x < 0) {
            x *= -1;
            buf[i ++] = '-';
        }
        if (x == 0) {
            buf[i ++] = '0';
            return;
        }
        char s[K];
        int j = 0;
        while (x) {
            s[j ++] = x % 10 + '0';
            x /= 10;
        }
        while (j) {
            buf[i ++] = s[-- j];
        }
    }
};
#line 4 "hack/fastio_scanner_and_printer.yosupo.test.cpp"

scanner sc;
printer pr;

int main() {
    int t = sc.get<int>();
    while (t --) {
        uint64_t a = sc.get<uint64_t>();
        uint64_t b = sc.get<uint64_t>();
        pr.put<uint64_t>(a + b);
        pr.put<char>('\n');
    }
    return 0;
}

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