0_0_30438253_7125.c:20:25: error: expected ';', ',' or ')' before '&' token
void exgcd(ll a,ll b,ll &x,ll &y)
^
0_0_30438253_7125.c: In function 'work':
0_0_30438253_7125.c:40:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(ll i = 1;i < s ;++i)
^
0_0_30438253_7125.c:40:2: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_30438253_7125.c:45:9: error: redefinition of 'i'
for(ll i = 1;i < s ;++i)
^
0_0_30438253_7125.c:40:9: note: previous definition of 'i' was here
for(ll i = 1;i < s ;++i)
^
0_0_30438253_7125.c:45:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(ll i = 1;i < s ;++i)
^
0_0_30438253_7125.c:49:1: error: expected expression before '/' token
// (n)!*(n-k)!
^
0_0_30438253_7125.c: In function 'F':
0_0_30438253_7125.c:58:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i = 2;i <= x;++i)
^
0_0_30438253_7125.c: In function 'main':
0_0_30438253_7125.c:72:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(ll i = 2;i*i<=tmp&&tmp>1;++i)
^
0_0_30438253_7125.c:91:10: error: redefinition of 'i'
for(ll i=1;i<=len;++i)
^
0_0_30438253_7125.c:72:10: note: previous definition of 'i' was here
for(ll i = 2;i*i<=tmp&&tmp>1;++i)
^
0_0_30438253_7125.c:91:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(ll i=1;i<=len;++i)
^
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