Submission #117914

#	Time	Username	Problem	Language	Result	Execution time	Memory
117914		songc	Tenis (COI19_tenis)	C++14	100 / 100	226 ms	5784 KiB

tenis

#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
typedef pair<int, int> pii;

int N, Q;
int A[101010];
int B[101010];
int C[101010];
int cnt[404040];
bool T[404040];

void update(int id, int s, int e, int ts, int te, int v){
    if (e < ts || te < s) return;
    if (ts <= s && e <= te) {
        cnt[id] += v;
        T[id] = (cnt[id] > 0) || (T[id*2] && T[id*2+1]);
        return;
    }
    int mid = (s+e)/2;
    update(id*2, s, mid, ts, te, v);
    update(id*2+1, mid+1, e, ts, te, v);
    T[id] = (cnt[id] > 0) || (T[id*2] && T[id*2+1]);
}

bool query(int id, int s, int e, int ts, int te){
    if (e < ts || te < s || T[id]) return true;
    if (ts <= s && e <= te) return T[id];
    int mid = (s+e)/2;
    return query(id*2, s, mid, ts, te) && query(id*2+1, mid+1, e, ts, te);
}

int main(){
    int a, b, c;
    scanf("%d %d", &N, &Q);
    for (int i=1; i<=N; i++){scanf("%d", &a); A[a] = i;}
    for (int i=1; i<=N; i++){scanf("%d", &a); B[a] = i;}
    for (int i=1; i<=N; i++){scanf("%d", &a); C[a] = i;}
    for (int i=1; i<=N; i++) update(1, 1, N, min(A[i], min(B[i], C[i])),  max(A[i], max(B[i], C[i]))-1, 1);
    while (Q--){
        scanf("%d", &a);
        if (a == 1){
            scanf("%d", &a);
            if (query(1, 1, N, 1, min(A[a], min(B[a], C[a]))-1)) puts("DA");
            else puts("NE");
        }
        else{
            scanf("%d %d %d", &a, &b, &c);
            update(1, 1, N, min(A[b], min(B[b], C[b])),  max(A[b], max(B[b], C[b]))-1, -1);
            update(1, 1, N, min(A[c], min(B[c], C[c])),  max(A[c], max(B[c], C[c]))-1, -1);
            if (a == 1) swap(A[b], A[c]);
            if (a == 2) swap(B[b], B[c]);
            if (a == 3) swap(C[b], C[c]);
            update(1, 1, N, min(A[b], min(B[b], C[b])),  max(A[b], max(B[b], C[b]))-1, 1);
            update(1, 1, N, min(A[c], min(B[c], C[c])),  max(A[c], max(B[c], C[c]))-1, 1);
        }
    }
    return 0;
}

Compilation message (stderr)

tenis.cpp: In function 'int main()':
tenis.cpp:35:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &N, &Q);
     ~~~~~^~~~~~~~~~~~~~~~~
tenis.cpp:36:35: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for (int i=1; i<=N; i++){scanf("%d", &a); A[a] = i;}
                              ~~~~~^~~~~~~~~~
tenis.cpp:37:35: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for (int i=1; i<=N; i++){scanf("%d", &a); B[a] = i;}
                              ~~~~~^~~~~~~~~~
tenis.cpp:38:35: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for (int i=1; i<=N; i++){scanf("%d", &a); C[a] = i;}
                              ~~~~~^~~~~~~~~~
tenis.cpp:41:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &a);
         ~~~~~^~~~~~~~~~
tenis.cpp:43:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &a);
             ~~~~~^~~~~~~~~~
tenis.cpp:48:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d %d %d", &a, &b, &c);
             ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 11 / 11
• Subtask 3: 12 / 12
• Subtask 4: 21 / 21
• Subtask 5: 49 / 49