제출 #466946

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
466946		XBoRickie	Savrsen (COCI17_savrsen)	C++11	120 / 120	521 ms	81300 KiB

savrsen

#include <bits/stdc++.h>
using namespace std;
// Typedef
typedef string                     str;
typedef long double                ld;
typedef long long int              int64;
typedef unsigned long long int     uint64;
typedef std::pair<int, int>        PII;
typedef std::pair<int64, int64>    PLL;
typedef std::vector<int>           VI;
typedef std::vector<long long>     VLL;
// Define For-loop
#define FOR(i, j, k, in)           for (int i = (j); i < (k) ; i += (in))
#define FORW(i, j, k, in)          for (int i = (j); i <= (k); i += (in))
#define RFOR(i, j, k, in)          for (int i = (j); i >= (k); i -= (in))
// Define Data structure func
#define all(cont)                  cont.begin(), cont.end()
#define rall(cont)                 cont.rbegin(), cont.rend()
#define sz(cont)                   int((cont).size())
#define pb                         push_back
#define mp                         make_pair
#define fi                         first
#define se                         second
// Define number
#define IINF                       0x3f3f3f3f
#define LLINF                      1000111000111000111LL
#define PI                         3.1415926535897932384626433832795
// Other
#define lend                       '\n'
#define hardio(name)               freopen(name".inp","r",stdin), freopen(name".out","w",stdout);
void FastIO() { std::ios_base::sync_with_stdio(false); std::cin.tie(NULL); cin.exceptions(cin.failbit); srand(time(NULL)); }

const int MOD = 1e9 + 7, MOD2 = 1e9 + 9;
// ======================================================================

namespace io { const int SIZE = (1 << 20) + 1;
    char ibuf[SIZE], *iS, *iT, obuf[SIZE], *oS = obuf, *oT = oS + SIZE - 1, c, qu[55]; int f, qr;
    #define gc() (iS == iT ? (iT = (iS = ibuf) + fread (ibuf, 1, SIZE, stdin), (iS == iT ? EOF : *iS ++)) : *iS ++)
    inline void flush() { fwrite (obuf, 1, oS - obuf, stdout); oS = obuf; } // print the remaining part
    inline void putc(char x) { *oS++ = x; if (oS == oT) flush (); } // putchar
    template<typename A> inline bool read (A &x) {
        for (f = 1, c = gc(); c < '0' || c > '9'; c = gc()) if (c == '-') f = -1; else if (c == EOF) return 0;
        for (x = 0; c <= '9' && c >= '0'; c = gc()) x = x * 10 + (c & 15); x *= f;
        return 1; }
    inline bool read(char &x) { while((x = gc()) == ' ' || x == '\n' || x == '\r'); return x != EOF; }
    inline bool read(string& x) {
        while ((c = gc()) == '\n' || c == ' '|| c == '\r'); if (c == EOF) return 0; x.clear();
        while (!(c == '\n' || c == ' ' || c == '\r' || c == EOF)) x.push_back(c), c = gc(); return 1;
    }
    template<typename A,typename ...B>
    inline bool read(A &x, B &...y) { return read(x) + read(y...); }
    template<typename A> inline bool write(A x) {
        if (!x) putc('0'); if (x < 0) putc ('-'), x = -x;
        while (x) qu[++qr] = x % 10 + '0', x /= 10;
        while (qr) putc(qu[qr--]);
        return 0; }
    inline bool write(char x) { putc(x); return 0; }
    inline bool write(const char *x){ while (*x){ putc(*x); ++x; } return 0; }
    inline bool write(char *x){ while (*x){ putc(*x); ++x; } return 0; }
    template<typename A,typename ...B>
    inline bool write(A x,B ...y){ return write(x) || write(y...); }
    //no need to call flush at the end manually!
    struct Flusher_ {~Flusher_(){ flush(); }} io_flusher_;
} using io::read; using io::putc; using io::write;

int l, r;
vector<int> pr;
int lp[10000007] = {};

void sieve(int N = sqrt(1e9)) {
    FORW(i, 2, N, 1) {
        if (lp[i] == 0)
            lp[i] = i, pr.pb(i);
        for(int j = 0; j < pr.size() && pr[j] <= lp[i] && 1ll*i*pr[j] <= N; ++j)
            lp[i * pr[j]] = pr[j];
    }
}

int sum[10000007] = {};

int main(int argc, char* argv[]) {
    FastIO();

    read(l, r);
    sieve(r);

    FORW(i, l, r, 1) sum[i] = 1;

    for(int p : pr) {
        int sm = 1;
        for(int64 x = p; x <= r; x *= p) {
            for(int y = x; y <= r; y += x) {
                sum[y] /= sm;
                sum[y] *= (sm + x);
            }
            sm += x;
        }
    }

    int64 ans = 0;
    FORW(i, l, r, 1) ans += abs(2ll * i - sum[i]);
    write(ans);


    return 0; }

컴파일 시 표준 에러 (stderr) 메시지

savrsen.cpp: In function 'bool io::read(A&)':
savrsen.cpp:43:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   43 |         for (x = 0; c <= '9' && c >= '0'; c = gc()) x = x * 10 + (c & 15); x *= f;
      |         ^~~
savrsen.cpp:43:76: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   43 |         for (x = 0; c <= '9' && c >= '0'; c = gc()) x = x * 10 + (c & 15); x *= f;
      |                                                                            ^
savrsen.cpp: In function 'bool io::read(std::string&)':
savrsen.cpp:47:9: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
   47 |         while ((c = gc()) == '\n' || c == ' '|| c == '\r'); if (c == EOF) return 0; x.clear();
      |         ^~~~~
savrsen.cpp:47:61: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'while'
   47 |         while ((c = gc()) == '\n' || c == ' '|| c == '\r'); if (c == EOF) return 0; x.clear();
      |                                                             ^~
savrsen.cpp:48:9: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
   48 |         while (!(c == '\n' || c == ' ' || c == '\r' || c == EOF)) x.push_back(c), c = gc(); return 1;
      |         ^~~~~
savrsen.cpp:48:93: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'while'
   48 |         while (!(c == '\n' || c == ' ' || c == '\r' || c == EOF)) x.push_back(c), c = gc(); return 1;
      |                                                                                             ^~~~~~
savrsen.cpp: In function 'bool io::write(A)':
savrsen.cpp:53:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   53 |         if (!x) putc('0'); if (x < 0) putc ('-'), x = -x;
      |         ^~
savrsen.cpp:53:28: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   53 |         if (!x) putc('0'); if (x < 0) putc ('-'), x = -x;
      |                            ^~
savrsen.cpp: In function 'void sieve(int)':
savrsen.cpp:74:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   74 |         for(int j = 0; j < pr.size() && pr[j] <= lp[i] && 1ll*i*pr[j] <= N; ++j)
      |                        ~~^~~~~~~~~~~

• Subtask 1: 120 / 120