結果
| 問題 |
No.1673 Lamps on a line
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2021-09-10 21:23:45 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 33 ms / 2,000 ms |
| コード長 | 4,756 bytes |
| コンパイル時間 | 4,308 ms |
| コンパイル使用メモリ | 186,048 KB |
| 最終ジャッジ日時 | 2025-01-24 09:30:19 |
|
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 11 |
ソースコード
#include <iostream>
#include <algorithm>
#include <utility>
#include <string>
#include <vector>
#include <set>
#include <stack>
#include <queue>
#include <map>
#include <math.h>
#include <string.h>
#include <iomanip>
#include <numeric>
#include <cstdlib>
#include <cstdint>
#include <cmath>
#include <functional>
#include <limits>
#include <cassert>
#include <bitset>
#include <chrono>
#include <random>
#include <memory>
#include <atcoder/all>
/* macro */
#define rep(i, a, n) for (int i = (int)(a); i < (int)(n); i++)
#define rrep(i, a, n) for (int i = ((int)(n-1)); i >= (int)(a); i--)
#define Rep(i, a, n) for (i64 i = (i64)(a); i< (i64)(n); i++)
#define RRep(i, a, n) for (i64 i = ((i64)(n-i64(1))); i>=(i64)(a); i--)
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define Bit(n) (1LL<<(n))
/* macro end */
/* template */
namespace ebi {
#ifdef LOCAL
#define debug(...) \
std::cerr << "LINE: " << __LINE__ << " [" << #__VA_ARGS__ << "]:", \
debug_out(__VA_ARGS__)
#else
#define debug(...)
#endif
void debug_out() { std::cerr << std::endl; }
template <typename Head, typename... Tail>
void debug_out(Head h, Tail... t) {
std::cerr << " " << h;
if (sizeof...(t) > 0) std::cout << " :";
debug_out(t...);
}
template <typename T1, typename T2>
std::ostream& operator<<(std::ostream& os, std::pair<T1, T2> pa) {
return os << pa.first << " " << pa.second;
}
template <typename T>
std::ostream& operator<<(std::ostream& os, std::vector<T> vec) {
for (std::size_t i = 0; i < vec.size(); i++) os << vec[i] << (i + 1 == vec.size() ? "" : " ");
return os;
}
std::ostream& operator<<(std::ostream& os, atcoder::modint1000000007 a){
return os << a.val();
}
std::ostream& operator<<(std::ostream& os, atcoder::modint998244353 a){
return os << a.val();
}
using size_t = std::size_t;
using i32 = std::int32_t;
using u32 = std::uint32_t;
using i64 = long long;
using u64 = unsigned long long;
template<class T> void fill(std::vector<T> &v) { for(T &e: v) std::cin >> e; }
template<class T>
struct Edge {
int to;
T cost;
Edge(int to, T cost) : to(to), cost(cost) { }
};
template<class T>
std::ostream& operator<<(std::ostream& os, Edge<T> e) {
return os << "[" << e.to << ", " << e.cost << "] ";
}
template<class T>
struct Graph : std::vector<std::vector<Edge<T>>> {
using std::vector<std::vector<Edge<T>>>::vector;
void add_edge(int u, int v, T w, bool directed = false) {
(*this)[u].emplace_back(v, w);
if(directed) return;
(*this)[v].emplace_back(u, w);
}
};
struct graph : std::vector<std::vector<int>> {
using std::vector<std::vector<int>>::vector;
void add_edge(int u, int v, bool directed = false) {
(*this)[u].emplace_back(v);
if(directed) return;
(*this)[v].emplace_back(u);
}
};
template <class T>
inline bool chmin(T &a, T b) {
if (a > b){
a = b;
return true;
}
return false;
}
template <class T>
inline bool chmax(T &a, T b) {
if (a < b){
a = b;
return true;
}
return false;
}
template <class T>
T gcd(T a, T b){
if( b==0 ) return a;
else return gcd(b, a%b);
}
template <class T>
T lcm(T a, T b) {
return (a*b)/gcd(a,b);
}
template<class T>
T pow(T x, i64 n) {
T res = 1;
while(n>0){
if(n&1) res = res *x;
x = x*x;
n>>=1;
}
return res;
}
template<class T>
T mod_pow(T x, i64 n, i64 mod) {
T res = 1;
while(n > 0) {
if(n & 1) res = (res * x)%mod;
x = (x*x)%mod;
n >>= 1;
}
return res;
}
template<class T>
T scan() {
T val;
std::cin >> val;
return val;
}
constexpr i64 LNF = std::numeric_limits<i64>::max()/4;
constexpr int INF = std::numeric_limits<int>::max()/4;
const long double PI = acos(-1);
const std::vector<int> dy = {1,0,-1,0,1,1,-1,-1};
const std::vector<int> dx = {0,1,0,-1,1,-1,1,-1};
}
/* template end */
namespace ebi {
using pii = std::pair<int,int>;
using ld = long double;
using mint = atcoder::modint1000000007;
void main_() {
int n,q;
std::cin >> n >> q;
std::vector<int> lamp(n, 0);
int ans = 0;
while(q--) {
int l,r;
std::cin >> l >> r;
l--;
rep(i,l,r) {
if(lamp[i] == 0) {
ans++;
}
else {
ans--;
}
lamp[i] ^= 1;
}
std::cout << ans << '\n';
}
}
}
int main() {
std::cout << std::fixed << std::setprecision(15);
std::cin.tie(nullptr);
std::ios::sync_with_stdio(false);
int t = 1;
while(t--) {
ebi::main_();
}
return 0;
}