Submission #165281

#	Time	Username	Problem	Language	Result	Execution time	Memory
165281		egekabas	Relativnost (COCI15_relativnost)	C++14	56 / 140	4086 ms	53456 KiB

relativnost

#include <bits/stdc++.h>
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
using namespace std;
typedef long long   ll;
typedef unsigned long long   ull;
typedef long double ld;
typedef pair<ll, ll>    pll;
typedef pair<ull, ull>    pull;
typedef pair<ll, ll>  pii;
typedef pair<ld, ld>  pld;
ll n, c, q, mod = 10007;
ll a[100009];
ll b[100009];
ll seg[400009][25];
void merge(ll cur, ll l, ll r){
    for(ll i = 0; i < c; ++i){
        seg[cur][i] = 0;
        for(ll j = 0; j <= i; ++j){
            seg[cur][i] += seg[l][j]*seg[r][i-j]%mod;
            seg[cur][i] %= mod;
        }
    }
    seg[cur][c] = 0;
    for(ll i = 0; i <= c; ++i)
        for(ll j = c-i; j <= c; ++j){
                seg[cur][c] += seg[l][i]*seg[r][j]%mod;
                seg[cur][c] %= mod;
            }
}
void upd(ll v, ll tl, ll tr, ll idx){
    if(idx < tl || idx > tr)
        return;
    if(idx == tl && idx == tr){
        seg[v][0] = b[tl];
        seg[v][1] = a[tl];
    }
    else{
        ll tm = (tl+tr)/2;
        upd(2*v, tl, tm, idx);
        upd(2*v+1, tm+1, tr, idx);
        merge(v, 2*v, 2*v+1);
    }
}
void build(ll v, ll tl, ll tr){
    if(tl > tr)
        return;
    if(tl == tr){
        seg[v][0] = b[tl];
        seg[v][1] = a[tl];
    }
    else{
        ll tm = (tl+tr)/2;
        build(2*v, tl, tm);
        build(2*v+1, tm+1, tr);
        merge(v, 2*v, 2*v+1);
    }
}
int main() {
    
//    freopen("in.txt", "r", stdin);
    //freopen("out.txt", "w", stdout);

    cin >> n >> c;
    for(ll i = 0; i < n; ++i)
        scanf("%lld", &a[i]);
    for(ll i = 0; i < n; ++i)
        scanf("%lld", &b[i]);
    build(1, 0, n-1);
    cin >> q;
    while(q--){
        ll t1, t2, t3;
        scanf("%lld %lld %lld", &t1, &t2, &t3);
        --t1;
        a[t1] = t2;
        b[t1] = t3;
        upd(1, 0, n-1, t1);
        printf("%lld\n", seg[1][c]);
    }
}

Compilation message (stderr)

relativnost.cpp: In function 'int main()':
relativnost.cpp:68:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld", &a[i]);
         ~~~~~^~~~~~~~~~~~~~~
relativnost.cpp:70:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld", &b[i]);
         ~~~~~^~~~~~~~~~~~~~~
relativnost.cpp:75:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld %lld %lld", &t1, &t2, &t3);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 56 / 140