제출 #403147

#제출 시각아이디문제언어결과실행 시간메모리
403147ruadhan말 (IOI15_horses)C++17
컴파일 에러
0 ms0 KiB
#include "horses.h" #include <bits/stdc++.h> typedef long long ll; #define sz(x) (int)x.size() using namespace std; const int MOD = 1e9 + 7; const int MX = 5e5 + 5; int N; ll X[MX], Y[MX]; struct ModVal { ll div = 0, mod = 0; ModVal(ll _div, ll _mod) { div = _div; mod = _mod; } bool operator<(const ModVal &other) const { if (div == other.div) return mod < other.mod; return div < other.div; } ModVal operator*(const ModVal &other) { ModVal ret(0, 0); ret.div = div * other.div; ret.mod = (mod * other.mod) % MOD; ret.div += ((mod * other.mod) / MOD) % MOD; return ret; } ModVal operator*(const ll &integer) { ModVal ret(0, 0); ret.div = div + ((mod * integer) / MOD); ret.mod = (mod * integer) % MOD; return ret; } }; template <class T> struct SegMax { const T ID = {0, 0}; T comb(T a, T b) { return max(a, b); } int n; vector<T> seg; void init(int _n) { n = _n; seg.assign(2 * n, ID); } void pull(int p) { seg[p] = comb(seg[2 * p], seg[2 * p + 1]); } void upd(int p, T val) { seg[p += n] = val; for (p /= 2; p; p /= 2) pull(p); } T query(int l, int r) { T ra = ID, rb = ID; for (l += n, r += n + 1; l < r; l /= 2, r /= 2) { if (l & 1) ra = comb(ra, seg[l++]); if (r & 1) rb = comb(seg[--r], rb); } return comb(ra, rb); } }; SegMax<ModVal> mx; template <class T> struct SegMul { const T ID = {0, 1}; T comb(T a, T b) { return (a * b); } int n; vector<T> seg; void init(int _n) { n = _n; seg.assign(2 * n, ID); } void pull(int p) { seg[p] = comb(seg[2 * p], seg[2 * p + 1]); } void upd(int p, T val) { int pos = p; seg[p += n] = val; for (p /= 2; p; p /= 2) pull(p); mx.upd(pos, query(1, pos) * Y[pos - 1]); } T query(int l, int r) { T ra = ID, rb = ID; for (l += n, r += n + 1; l < r; l /= 2, r /= 2) { if (l & 1) ra = comb(ra, seg[l++]); if (r & 1) rb = comb(seg[--r], rb); } return comb(ra, rb); } }; SegMul<ModVal> mul; // int init(int N, vector<int> X, vector<int> Y) int init(int N, int X[], int Y[]) { ::N = N; for (int i = 0; i < sz(X); i++) ::X[i] = X[i]; for (int i = 0; i < sz(Y); i++) ::Y[i] = Y[i]; mx.init(N + 1), mul.init(N + 1); for (int i = 1; i <= N; i++) mul.upd(i, ModVal(0, X[i - 1])); return mx.query(1, N).mod; } int updateX(int pos, int val) { X[pos - 1] = val; mul.upd(pos, ModVal(0, val)); return mx.query(1, N).mod; } int updateY(int pos, int val) { Y[pos - 1] = val; mx.upd(pos, mul.query(1, pos) * Y[pos - 1]); return mx.query(1, N).mod; } // int main() // { // int n, m; // cin >> n >> m; // vector<int> a1(n), a2(n); // for (auto &x : a1) // cin >> x; // for (auto &x : a2) // cin >> x; // cout << init(n, a1, a2) << '\n'; // // for (auto x : mx.seg) // // cout << x.mod << " "; // // cout << '\n'; // // for (auto x : mul.seg) // // cout << x.mod << " "; // // cout << '\n'; // while (m--) // { // int a, b, c; // cin >> a >> b >> c; // b++; // if (a == 1) // { // cout << updateX(b, c) << '\n'; // } // else // { // cout << updateY(b, c) << '\n'; // } // } // // for (auto x : mx.seg) // // cout << x.mod << " "; // // cout << '\n'; // // for (auto x : mul.seg) // // cout << x.mod << " "; // // cout << '\n'; // // cout << mul.query(1, 2).mod << '\n'; // return 0; // }

컴파일 시 표준 에러 (stderr) 메시지

horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:122:30: warning: declaration of 'Y' shadows a global declaration [-Wshadow]
  122 | int init(int N, int X[], int Y[])
      |                          ~~~~^~~
horses.cpp:10:11: note: shadowed declaration is here
   10 | ll X[MX], Y[MX];
      |           ^
horses.cpp:122:21: warning: declaration of 'X' shadows a global declaration [-Wshadow]
  122 | int init(int N, int X[], int Y[])
      |                 ~~~~^~~
horses.cpp:10:4: note: shadowed declaration is here
   10 | ll X[MX], Y[MX];
      |    ^
horses.cpp:122:14: warning: declaration of 'N' shadows a global declaration [-Wshadow]
  122 | int init(int N, int X[], int Y[])
      |          ~~~~^
horses.cpp:9:5: note: shadowed declaration is here
    9 | int N;
      |     ^
horses.cpp:4:22: error: request for member 'size' in 'X', which is of non-class type 'int*'
    4 | #define sz(x) (int)x.size()
      |                      ^~~~
horses.cpp:125:25: note: in expansion of macro 'sz'
  125 |     for (int i = 0; i < sz(X); i++)
      |                         ^~
horses.cpp:4:22: error: request for member 'size' in 'Y', which is of non-class type 'int*'
    4 | #define sz(x) (int)x.size()
      |                      ^~~~
horses.cpp:127:25: note: in expansion of macro 'sz'
  127 |     for (int i = 0; i < sz(Y); i++)
      |                         ^~
horses.cpp:132:27: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  132 |     return mx.query(1, N).mod;
      |            ~~~~~~~~~~~~~~~^~~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:139:27: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  139 |     return mx.query(1, N).mod;
      |            ~~~~~~~~~~~~~~~^~~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:146:27: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  146 |     return mx.query(1, N).mod;
      |            ~~~~~~~~~~~~~~~^~~