atcoder/internal_csr.hpp

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• Last update: 2021-01-18 06:55:16+09:00
• Include: #include "atcoder/internal_csr.hpp"

Required by

• atcoder/internal_scc.hpp
• atcoder/mincostflow.hpp
• atcoder/scc.hpp
• atcoder/twosat.hpp

Code

#ifndef ATCODER_INTERNAL_CSR_HPP
#define ATCODER_INTERNAL_CSR_HPP 1

#include <algorithm>
#include <utility>
#include <vector>

namespace atcoder {
namespace internal {

template <class E> struct csr {
    std::vector<int> start;
    std::vector<E> elist;
    explicit csr(int n, const std::vector<std::pair<int, E>>& edges)
        : start(n + 1), elist(edges.size()) {
        for (auto e : edges) {
            start[e.first + 1]++;
        }
        for (int i = 1; i <= n; i++) {
            start[i] += start[i - 1];
        }
        auto counter = start;
        for (auto e : edges) {
            elist[counter[e.first]++] = e.second;
        }
    }
};

}  // namespace internal

}  // namespace atcoder

#endif  // ATCODER_INTERNAL_CSR_HPP

#line 1 "atcoder/internal_csr.hpp"



#include <algorithm>
#include <utility>
#include <vector>

namespace atcoder {
namespace internal {

template <class E> struct csr {
    std::vector<int> start;
    std::vector<E> elist;
    explicit csr(int n, const std::vector<std::pair<int, E>>& edges)
        : start(n + 1), elist(edges.size()) {
        for (auto e : edges) {
            start[e.first + 1]++;
        }
        for (int i = 1; i <= n; i++) {
            start[i] += start[i - 1];
        }
        auto counter = start;
        for (auto e : edges) {
            elist[counter[e.first]++] = e.second;
        }
    }
};

}  // namespace internal

}  // namespace atcoder

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