結果

問題 No.1194 Replace
ユーザー heno239heno239
提出日時 2020-08-22 14:21:21
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 462 ms / 2,000 ms
コード長 5,035 bytes
コンパイル時間 1,880 ms
コンパイル使用メモリ 135,980 KB
実行使用メモリ 97,856 KB
最終ジャッジ日時 2024-10-15 08:35:37
合計ジャッジ時間 10,188 ms
ジャッジサーバーID
(参考情報)
judge5 / judge4
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
other AC * 30
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 304 ms
69,264 KB
testcase_01 AC 328 ms
72,008 KB
testcase_02 AC 264 ms
62,520 KB
testcase_03 AC 213 ms
56,432 KB
testcase_04 AC 325 ms
72,000 KB
testcase_05 AC 306 ms
68,500 KB
testcase_06 AC 277 ms
65,560 KB
testcase_07 AC 450 ms
97,712 KB
testcase_08 AC 451 ms
97,712 KB
testcase_09 AC 450 ms
97,732 KB
testcase_10 AC 461 ms
97,732 KB
testcase_11 AC 462 ms
97,664 KB
testcase_12 AC 454 ms
97,856 KB
testcase_13 AC 240 ms
47,716 KB
testcase_14 AC 204 ms
42,180 KB
testcase_15 AC 199 ms
46,060 KB
testcase_16 AC 236 ms
48,016 KB
testcase_17 AC 174 ms
43,404 KB
testcase_18 AC 169 ms
39,660 KB
testcase_19 AC 247 ms
49,428 KB
testcase_20 AC 17 ms
19,780 KB
testcase_21 AC 18 ms
19,780 KB
testcase_22 AC 18 ms
19,908 KB
testcase_23 AC 90 ms
31,892 KB
testcase_24 AC 40 ms
24,772 KB
testcase_25 AC 25 ms
20,672 KB
testcase_26 AC 90 ms
28,780 KB
testcase_27 AC 29 ms
21,184 KB
testcase_28 AC 52 ms
24,100 KB
testcase_29 AC 21 ms
20,800 KB
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#include<iostream>
#include<string>
#include<cstdio>
#include<vector>
#include<cmath>
#include<algorithm>
#include<functional>
#include<iomanip>
#include<queue>
#include<ciso646>
#include<random>
#include<map>
#include<set>
#include<bitset>
#include<stack>
#include<unordered_map>
#include<utility>
#include<cassert>
#include<complex>
#include<numeric>
#include<array>
using namespace std;
//#define int long long
typedef long long ll;
typedef unsigned long long ul;
typedef unsigned int ui;
constexpr ll mod = 998244353;
const ll INF = mod * mod;
typedef pair<int, int>P;
#define stop char nyaa;cin>>nyaa;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define Rep(i,sta,n) for(int i=sta;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
#define per1(i,n) for(int i=n;i>=1;i--)
#define Rep1(i,sta,n) for(int i=sta;i<=n;i++)
#define all(v) (v).begin(),(v).end()
typedef pair<ll, ll> LP;
typedef double ld;
typedef pair<ld, ld> LDP;
const ld eps = 1e-12;
const ld pi = acosl(-1.0);
ll mod_pow(ll x, ll n, ll m) {
ll res = 1;
while (n) {
if (n & 1)res = res * x % m;
x = x * x % m; n >>= 1;
}
return res;
}
struct modint {
ll n;
modint() :n(0) { ; }
modint(ll m) :n(m) {
if (n >= mod)n %= mod;
else if (n < 0)n = (n % mod + mod) % mod;
}
operator int() { return n; }
};
bool operator==(modint a, modint b) { return a.n == b.n; }
modint operator+=(modint& a, modint b) { a.n += b.n; if (a.n >= mod)a.n -= mod; return a; }
modint operator-=(modint& a, modint b) { a.n -= b.n; if (a.n < 0)a.n += mod; return a; }
modint operator*=(modint& a, modint b) { a.n = ((ll)a.n * b.n) % mod; return a; }
modint operator+(modint a, modint b) { return a += b; }
modint operator-(modint a, modint b) { return a -= b; }
modint operator*(modint a, modint b) { return a *= b; }
modint operator^(modint a, ll n) {
if (n == 0)return modint(1);
modint res = (a * a) ^ (n / 2);
if (n % 2)res = res * a;
return res;
}
ll inv(ll a, ll p) {
return (a == 1 ? 1 : (1 - p * inv(p % a, a)) / a + p);
}
modint operator/(modint a, modint b) { return a * modint(inv(b, mod)); }
const int max_n = 1 << 20;
modint fact[max_n], factinv[max_n];
void init_f() {
fact[0] = modint(1);
for (int i = 0; i < max_n - 1; i++) {
fact[i + 1] = fact[i] * modint(i + 1);
}
factinv[max_n - 1] = modint(1) / fact[max_n - 1];
for (int i = max_n - 2; i >= 0; i--) {
factinv[i] = factinv[i + 1] * modint(i + 1);
}
}
modint comb(int a, int b) {
if (a < 0 || b < 0 || a < b)return 0;
return fact[a] * factinv[b] * factinv[a - b];
}
ul gcd(ul a, ul b) {
if (a < b)swap(a, b);
while (b) {
ul r = a % b; a = b; b = r;
}
return a;
}
struct graph {
private:
int n;
vector<vector<int>> G, rG;
vector<bool> used;
vector<int> vs;
int mk;
vector<vector<int>> fG;
vector<vector<int>> ori;
vector<int> trans;
public:
graph(int sz) {
n = sz;
G.resize(n);
rG.resize(n);
used.resize(n);
fG.resize(n);
trans.resize(n, -1);
ori.resize(n);
}
void add_edge(int a, int b) {
G[a].push_back(b);
rG[b].push_back(a);
}
void dfs(int v) {
used[v] = true;
rep(i, G[v].size()) {
if (!used[G[v][i]])dfs(G[v][i]);
}
vs.push_back(v);
}
void rdfs(int v, int k) {
used[v] = true;
queue<int> q; q.push(v);
vector<int> c;
while (!q.empty()) {
int id = q.front(); q.pop();
ori[k].push_back(id);
rep(j, rG[id].size()) {
int to = rG[id][j];
if (used[to]) {
if (trans[to] >= 0)c.push_back(trans[to]);
continue;
}
used[to] = true; q.push(to);
}
}
sort(c.begin(), c.end());
int len = unique(c.begin(), c.end()) - c.begin();
rep(i, len) {
fG[c[i]].push_back(k);
}
rep(i, ori[k].size()) {
trans[ori[k][i]] = k;
}
}
void scc() {
fill(used.begin(), used.end(), false);
rep(i, n) {
if (!used[i])dfs(i);
}
fill(used.begin(), used.end(), false);
int k = 0;
per(i, (int)vs.size()) {
if (!used[vs[i]]) {
rdfs(vs[i], k); k++;
}
}
mk = k;
}
vector<int> query() {
vector<int> res(n);
vector<int> ma(mk);
per(i, mk) {
for (int id : ori[i]) {
ma[i] = max(ma[i], id);
}
for (int to : fG[i]) {
ma[i] = max(ma[i], ma[to]);
}
for (int id : ori[i]) {
res[id] = ma[i];
}
}
return res;
}
};
void solve() {
ll s; cin >> s;
int m; cin >> m;
vector<int> b(m), c(m);
vector<int> vx;
rep(i, m) {
cin >> b[i] >> c[i];
vx.push_back(b[i]);
vx.push_back(c[i]);
}
sort(all(vx));
vx.erase(unique(all(vx)), vx.end());
int n = vx.size();
ll ans = (ll)s * (s + 1) / 2;
rep(i, vx.size())ans -= vx[i];
rep(i, m) {
b[i] = lower_bound(all(vx), b[i]) - vx.begin();
c[i] = lower_bound(all(vx), c[i])-vx.begin();
}
graph g(n);
rep(i, m) {
g.add_edge(b[i], c[i]);
}
g.scc();
vector<int> col = g.query();
rep(i, n) {
ans += vx[col[i]];
}
cout << ans << "\n";
}
signed main() {
ios::sync_with_stdio(false);
cin.tie(0);
//cout << fixed << setprecision(10);
init_f();
//expr();
//int t; cin >> t; rep(i, t)
//while (cin >> n >> m>>s1>>s2>>t, n)
solve();
return 0;
}
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