oj.uz

Submission #477944

# Submission time Handle Problem Language Result Execution time Memory
477944 2021-10-04T17:42:59 Z stefantaga Lucky Numbers (RMI19_lucky) C++14
100 / 100
 28 ms 10316 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int mod = 1000000007;
ll mem[100005][2];
int a[100005];
int n,q;
ll dp(int id, int lastone){
    if (id == 0) return 1;
    if (mem[id][lastone] != -1) return mem[id][lastone];
    ll ret = 0;
    for (int i = 0; i < 10; i++){
        if (lastone && i == 3) continue;
        ret += dp(id-1,i==1);
    }
    ret %= mod;
    //printf("%d %d %lld\n",id,lastone,ret);
    return mem[id][lastone] = ret;
}
ll qu(int l, int r){
    ll ret = 0;
    int ct = r-l;
    bool isthirteenalready = false;
    for (int i = l; i <= r && !isthirteenalready; i++, ct--){
        int num = a[i]-(i!=l && a[i-1]==1 && a[i]>3);
        int numone = (a[i]>1);
        if (numone) ret += dp(ct,1);
        ret += (num-numone)*dp(ct,0);
        if (i != l && a[i-1] == 1 && a[i] == 3) isthirteenalready = true;
    }
    if (!isthirteenalready) ret++;
    ret %= mod;
    return ret;
}
int main(){
    scanf("%d%d",&n,&q);
    for (int i = 0; i < n; i++){
        char ch;
        scanf(" %c",&ch);
        a[i] = ch-'0';
    }
    memset(mem,-1,sizeof(mem));
    printf("%lld\n",qu(0,n-1));
    for (int i = 0; i < q; i++){
        int t,l,r;
        scanf("%d%d%d",&t,&l,&r);
        if (t == 1){
            printf("%lld\n",qu(--l,--r));
        }
        else{
            a[--l] = r;
        }
    }
}

Compilation message

lucky.cpp: In function 'int main()':
lucky.cpp:36:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |     scanf("%d%d",&n,&q);
      |     ~~~~~^~~~~~~~~~~~~~
lucky.cpp:39:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |         scanf(" %c",&ch);
      |         ~~~~~^~~~~~~~~~~
lucky.cpp:46:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |         scanf("%d%d%d",&t,&l,&r);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1740 KB Output is correct
2 Correct 1 ms 1868 KB Output is correct
3 Correct 1 ms 1868 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1740 KB Output is correct
2 Correct 1 ms 1868 KB Output is correct
3 Correct 1 ms 1868 KB Output is correct
4 Correct 1 ms 1840 KB Output is correct
5 Correct 1 ms 1740 KB Output is correct
6 Correct 1 ms 1868 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 2684 KB Output is correct
2 Correct 14 ms 2892 KB Output is correct

Subtask #4
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 2684 KB Output is correct
2 Correct 14 ms 2892 KB Output is correct
3 Correct 22 ms 8672 KB Output is correct
4 Correct 23 ms 8576 KB Output is correct
5 Correct 27 ms 9492 KB Output is correct
6 Correct 28 ms 10308 KB Output is correct
7 Correct 28 ms 10316 KB Output is correct

Subtask #5
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1740 KB Output is correct
2 Correct 1 ms 1868 KB Output is correct
3 Correct 1 ms 1868 KB Output is correct
4 Correct 1 ms 1840 KB Output is correct
5 Correct 1 ms 1740 KB Output is correct
6 Correct 1 ms 1868 KB Output is correct
7 Correct 11 ms 2684 KB Output is correct
8 Correct 14 ms 2892 KB Output is correct
9 Correct 7 ms 2636 KB Output is correct
10 Correct 10 ms 2848 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1740 KB Output is correct
2 Correct 1 ms 1868 KB Output is correct
3 Correct 1 ms 1868 KB Output is correct
4 Correct 1 ms 1840 KB Output is correct
5 Correct 1 ms 1740 KB Output is correct
6 Correct 1 ms 1868 KB Output is correct
7 Correct 11 ms 2684 KB Output is correct
8 Correct 14 ms 2892 KB Output is correct
9 Correct 22 ms 8672 KB Output is correct
10 Correct 23 ms 8576 KB Output is correct
11 Correct 27 ms 9492 KB Output is correct
12 Correct 28 ms 10308 KB Output is correct
13 Correct 28 ms 10316 KB Output is correct
14 Correct 7 ms 2636 KB Output is correct
15 Correct 10 ms 2848 KB Output is correct
16 Correct 19 ms 8592 KB Output is correct
17 Correct 19 ms 8524 KB Output is correct
18 Correct 20 ms 9420 KB Output is correct
19 Correct 22 ms 10280 KB Output is correct
20 Correct 26 ms 10304 KB Output is correct