Submission #1014038

#	Time	Username	Problem	Language	Result	Execution time	Memory
1014038		Error404	Horses (IOI15_horses)	C++17	Compilation error	0 ms	0 KiB

horses

#include "bits/stdc++.h"
using namespace std;
#define ll long long
#define f first
#define s second
#define pi pair<ll,ll>
#define vi vector<ll>
#define vd vector<double>
#define vpi vector<pi>
#define pb push_back
#define INF 1e18
#define endl '\n'
//#define int ll
#define pii pair<pi,ll>
const int mod = 1e9+7;

vd x, y;
vi ox, oy;
const int MAX = 500000;
int n;
struct dt {
    double sum, pref;
    ll mulx,ans;
};

dt t[MAX*4];


dt make_data(int i){
    dt a;
    a.sum = x[i];
    a.mulx = ox[i];
    a.pref = x[i] + y[i];
    a.ans = (ox[i]*oy[i])%mod;
    return a;
}



dt combine(dt a, dt b){
    dt hold;
    hold.sum = a.sum+ b.sum;
    hold.mulx = ((a.mulx % mod) * (b.mulx % mod))%mod;
    if(a.pref > a.sum+b.pref){
        hold.pref = a.pref;
        hold.ans = a.ans;
    }
    else{
        hold.pref = a.sum+ b.pref;
        hold.ans = a.mulx * b.ans; 
    }
    return hold;
} 

void build(int v,int l,int r){
    if(l==r){
        t[v] = make_data(l);
        return;
    }

    int m = (l+r)/2;
    build(v*2,l,m);
    build(v*2+1,m+1,r);
    t[v] = combine(t[v*2],t[v*2+1]);
}


int initialize(int N, int a[], int b[]){
    n = N;
    x.resize(n+1);
    y.resize(n+1);
    ox.resize(n+1);
    oy.resize(n+1);

    x[0]=0;
    y[0]=0;
    for(int i =1 ; i <= n; i++){
        ox[i] = a[i-1];
        oy[i] = b[i-1];
        x[i] =log10(ox[i]);
        y[i] =  log10(oy[i]);
    }
    build(1,1,n);
    return t[1].ans;
}



void update(int v, int l,int r, int pos){
    if(l==r){
        t[v]= make_data(l);
        return;
    }
    int m = (l+r)/2;
    if(pos<=m) update(v*2,l,m,pos);
    else  update(v*2+1,m+1,r,pos);
    t[v] = combine(t[v*2],t[v*2+1]);
  
}



int updateX(int pos,int val){
    pos ++;
    x[pos] = log10(val);
    ox[pos]= val;
    update(1,1,n,pos);
    return t[1].ans;
}

int updateY(int pos,int val){
    pos++;
    y[pos] = log10(val);
    oy[pos] = val;
    update(1,1,n,pos);
    return t[1].ans;
}




signed main(){
   int n,m;
   cin >> n;
   int a[n];
   int b[n];
    for(int i =0 ; i < n; i++){
        cin >> a[i];
    }
    for(int i =0 ; i < n; i++){
        cin >> b[i];
    }
    cout <<initialize(n,a,b)<< endl;
    cin >> m;
    int type, g,h;
    while(m--){
        cin >> type >> g >> h;
        if(type==1) cout << updateX(g,h) << endl;
        else cout << updateY(g,h) << endl;
    }


}

Compilation message (stderr)

horses.cpp: In function 'int initialize(int, int*, int*)':
horses.cpp:84:17: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   84 |     return t[1].ans;
      |            ~~~~~^~~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:108:17: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  108 |     return t[1].ans;
      |            ~~~~~^~~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:116:17: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  116 |     return t[1].ans;
      |            ~~~~~^~~
horses.cpp: In function 'int main()':
horses.cpp:123:8: warning: declaration of 'n' shadows a global declaration [-Wshadow]
  123 |    int n,m;
      |        ^
horses.cpp:20:5: note: shadowed declaration is here
   20 | int n;
      |     ^
/usr/bin/ld: /tmp/ccgu9Re7.o: in function `main':
grader.c:(.text.startup+0x0): multiple definition of `main'; /tmp/ccjjhuF6.o:horses.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccgu9Re7.o: in function `main':
grader.c:(.text.startup+0xaa): undefined reference to `init(int, int*, int*)'
collect2: error: ld returned 1 exit status