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Cod sursa(job #254494)
#include <stdio.h>
using namespace std;
long n, i, j, k, m, v[250010], s[250010], st, dr, cst, cdr, mi, poz;
int main()
{
freopen("cuburi2.in", "r", stdin);
freopen("cuburi2.out", "w", stdout);
scanf("%d %d\n", &n, &m);
for(i=1; i<=n; i++)
{
scanf("%d ", &v[i]);
s[i]=s[i-1]+v[i];
}
for(i=1; i<=m; i++)
{
scanf("%d %d", &st, &dr);
cdr=0;
cst=0;
for(j=st; j<=dr; j++)
{
cdr+=(s[dr]-s[j]);
}
mi=cdr;
poz=st;
for(j=st+1; j<=dr; j++)
{
cst+=(s[j-1]-s[st-1]);
cdr-=(s[dr]-s[j-1]);
if(cdr+cst<mi)
{
mi=cdr+cst;
poz=j;
}
}
printf("%d %d\n", poz, mi);
}
return 0;
}