Submission #547383

#	Time	Username	Problem	Language	Result	Execution time	Memory
547383		duality	Misspelling (JOI22_misspelling)	C++17	100 / 100	635 ms	114728 KiB

misspelling

#define DEBUG 0

#include <bits/stdc++.h>
using namespace std;

#if DEBUG
// basic debugging macros
int __i__,__j__;
#define printLine(l) for(__i__=0;__i__<l;__i__++){cout<<"-";}cout<<endl
#define printLine2(l,c) for(__i__=0;__i__<l;__i__++){cout<<c;}cout<<endl
#define printVar(n) cout<<#n<<": "<<n<<endl
#define printArr(a,l) cout<<#a<<": ";for(__i__=0;__i__<l;__i__++){cout<<a[__i__]<<" ";}cout<<endl
#define print2dArr(a,r,c) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<a[__i__][__j__]<<" ";}cout<<endl;}
#define print2dArr2(a,r,c,l) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<setw(l)<<setfill(' ')<<a[__i__][__j__]<<" ";}cout<<endl;}

// advanced debugging class
// debug 1,2,'A',"test";
class _Debug {
    public:
        template<typename T>
        _Debug& operator,(T val) {
            cout << val << endl;
            return *this;
        }
};
#define debug _Debug(),
#else
#define printLine(l)
#define printLine2(l,c)
#define printVar(n)
#define printArr(a,l)
#define print2dArr(a,r,c)
#define print2dArr2(a,r,c,l)
#define debug
#endif

// define
#define MAX_VAL 999999999
#define MAX_VAL_2 999999999999999999LL
#define EPS 1e-6
#define mp make_pair
#define pb push_back

// typedef
typedef unsigned int UI;
typedef long long int LLI;
typedef unsigned long long int ULLI;
typedef unsigned short int US;
typedef pair<int,int> pii;
typedef pair<LLI,LLI> plli;
typedef vector<int> vi;
typedef vector<LLI> vlli;
typedef vector<pii> vpii;
typedef vector<plli> vplli;

// ---------- END OF TEMPLATE ----------
#define MOD 1000000007

int lazy1[1 << 20],lazy2[1 << 20];
int build(int s,int e,int i) {
    if (s == e) {
        lazy1[i] = lazy2[i] = -1;
        return 0;
    }

    int mid = (s+e) / 2;
    build(s,mid,2*i+1),build(mid+1,e,2*i+2);
    lazy1[i] = lazy2[i] = -1;
    return 0;
}
int update(int s,int e,int as,int ae,int i,int t,int num) {
    if ((s > ae) || (e < as)) return 0;
    else if ((s >= as) && (e <= ae)) {
        if (t == 1) lazy1[i] = max(lazy1[i],num);
        else lazy2[i] = max(lazy2[i],num);
        return 0;
    }

    int mid = (s+e) / 2;
    update(s,mid,as,ae,2*i+1,t,num),update(mid+1,e,as,ae,2*i+2,t,num);
    return 0;
}
int l1[500000],l2[500000];
int process(int s,int e,int i) {
    if (s == e) {
        l1[s] = lazy1[i],l2[s] = lazy2[i];
        return 0;
    }

    int mid = (s+e) / 2;
    lazy1[2*i+1] = max(lazy1[2*i+1],lazy1[i]);
    lazy1[2*i+2] = max(lazy1[2*i+2],lazy1[i]);
    lazy2[2*i+1] = max(lazy2[2*i+1],lazy2[i]);
    lazy2[2*i+2] = max(lazy2[2*i+2],lazy2[i]);
    process(s,mid,2*i+1),process(mid+1,e,2*i+2);
    return 0;
}
int dp[500000][26],pre[500001][26];
int main() {
    int i;
    int N,M,A,B;
    scanf("%d %d",&N,&M);
    build(0,N-1,0);
    for (i = 0; i < M; i++) {
        scanf("%d %d",&A,&B);
        A--,B--;
        if (A < B) update(0,N-1,A,B-1,0,1,A);
        else update(0,N-1,B,A-1,0,2,B);
    }
    process(0,N-1,0);

    int j,k;
    for (i = 0; i < 26; i++) dp[0][i] = pre[1][i] = 1;
    for (i = 1; i < N; i++) {
        j = 0;
        for (k = 0; k < 26; k++) {
            if (j == k) continue;
            if (j > k) dp[i][j] = ((LLI) dp[i][j]+pre[i][k]-pre[l1[i-1]+1][k]+MOD) % MOD;
            else dp[i][j] = ((LLI) dp[i][j]+pre[i][k]-pre[l2[i-1]+1][k]+MOD) % MOD;
        }
        for (j = 1; j < 26; j++) {
            dp[i][j] = dp[i][j-1];
            dp[i][j] = ((LLI) dp[i][j]+pre[i][j-1]-pre[l1[i-1]+1][j-1]+MOD) % MOD;
            dp[i][j] = ((LLI) dp[i][j]-(pre[i][j]-pre[l2[i-1]+1][j])+MOD) % MOD;
        }
        for (j = 0; j < 26; j++) pre[i+1][j] = (pre[i][j]+dp[i][j]) % MOD;
    }
    int ans = 0;
    for (i = 0; i < 26; i++) ans = (ans+pre[N][i]) % MOD;
    printf("%d\n",ans);

    return 0;
}

Compilation message (stderr)

misspelling.cpp: In function 'int main()':
misspelling.cpp:102:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  102 |     scanf("%d %d",&N,&M);
      |     ~~~~~^~~~~~~~~~~~~~~
misspelling.cpp:105:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  105 |         scanf("%d %d",&A,&B);
      |         ~~~~~^~~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 20 / 20
• Subtask 3: 29 / 29
• Subtask 4: 32 / 32
• Subtask 5: 11 / 11